Read the excerpt from A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano.

Most of the time gravity seems to work the way Newton described it. Newton's rules explain a lot, from falling apples to most planets' orbits. But his laws don't work perfectly. In high-gravity zones, Newton's ideas don't jibe with what scientists observe. For example, Mercury's orbit—up close to the Sun—has a blip in it that Newton's laws can't explain.

Glitches like this one were the reason Einstein worked so hard at coming up with a new explanation. He wanted to account for everything. His ideas about curving space may sound bizarre, but they work! They took care of the gaps in Newton's theory and explained Mercury's orbit. They led scientists to predict shifting starlight and black holes. All of this is powerful evidence that Einstein was on to something.

However, in day-to-day experience, the strangeness of Einstein's ideas doesn't help us, and Newton's notions do just fine. In everyday life, when gravity isn't especially intense, Newton's and Einstein's ways of thinking lead to similar results. The two explanations work like different languages that express the same thing. Is an apple red (English) or rojo (Spanish)? It's okay to use either description.

Which detail should be left out of a summary of the excerpt?

Newton’s rules explain a lot, but they do not work in high-gravity zones.
Einstein’s ideas about curving space help explain gaps in Newton’s laws.
Both Newton’s and Einstein’s ideas can work in different circumstances.
Newton’s and Einstein’s ideas are like the word “red” in English or Spanish.

D. Newton’s and Einstein’s ideas are like the word “red” in English or Spanish.

Explanation:

When writting a summary for any text, one should be able to distinguish main ideas from less important parts and to include only those essential information.

Now, this article deals with two theories that explain gravity and the circumstances under which each of them works or doesn't work.

So, those are pieces of information that definitely need to find their place in the summary and we see that those claims are stated in answers A. B. and C.

Finally, answer D. is only an example of the way Newton's and Einstein's theory can be compared. It helps readers to better understand the text, but it's not an essential part of the text itself.

the answer is slaves

douglas was a slave who turned into a statesman and he refused to celebrate the 4th of july until all slaves were emancipated or set free.

in the short story the slip-over sweater by jesse stuart, the main character and narrator shan is friends with grace, an intelligent girl he has known since childhood and with whom he used to be in love.

at the beginning of the story, shan believes he’s no longer in love with grace, but loves jo-anne instead. in order to buy a slip-over sweater and have jo-anne wear it so that the other students would know she loved him too, shan takes a loan at the bank.

while jo-anne is wearing shan’s sweater, his friend grace starts to wear another popular boy’s one, roy’s sweater. because of that, the other students begin to pay attention to grace and compliment her perseverance and effort. they admire her for walking 5 miles to school every day, despite the weather, and still getting the best grades. shan, who knows all of that for a fact, says, as the narrator, ‘and i knew she had the durability and the toughness of a storm-battered mountain oak.’ he compares his friend’s strength – not only physical, but also of character – to an oak tree, whose wood is known for being sturdy.

as the story goes on, shan changes his behavior out of concern for the debt he has to pay at the bank. his new girlfriend jo-anne never asks him what is wrong nor offers any sort of . instead, she breaks up with shan for not being as fun as she thought he was supposed to be. grace, however, not only asks about shan’s problem, but him make the money he needs. shan can’t but notice how different the girls are and what a wonderful person grace is.   even though he used to find jo-anne prettier at the beginning of the story, he now says, ‘grace was as beautiful as our mountain was in april, prettier than a blossom of wild phlox or a mountain daisy.’ his comparing grace to a mountain or something that exists on a mountain (such as a mountain oak or daisy) certainly has important meaning since shan loves the mountain and everything about it and he knows the mountain thoroughly. shan also loves and knows grace as completely as he does the mountain.