What is the meaning of the advice "write what you know"? A. It is usually best to write about topics you have researched
carefully.
B. Good writing can come from observations you make about the
real world.
C. Authors' most successful books tend to be based on their own
lives.
D. The only way to write well is to write about your own life and
experiences.

The answer you're looking for is B!

Explanation:

- Eijiro <3

usually best to write about topics you've researched carefully

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )

ma”am had a granddaughter who lived a couple blocks away from her school who later on then met friends