Which development would most likely reduce the standard of living in the United States?
A. It becomes more difficult for U. S. citizens to get health care.
B. The U. S. government decides to return to the gold standard.
C. More Americans begin traveling to different states for work.
D. U. S. factories begin producing goods at a much faster rate.
SUBMIT

A. It becomes more difficult for U.S. citizens to get health care.

Explanation:

If people cannot have access to healthcare, there will be more illnesses/injuries and it will decrease the standard of living. If people start traveling to different states, that won't affect the standard of living in any way. If factories begin producing goods at a faster rate, it will be convenient for people. I don't know what the gold standard is but I'm assuming it's a good thing, so that isn't the answer. The only negative thing is answer choice, so that is the answer.

it proved indian land claims were unjustified.

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the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.