The best time to take the language subject test of the sat is:

The best time to take the language subject test of the SAT is after studying the language for several years

Explanation:

The language subject test of the SAT requires the applicants to demonstrate their mastery of the language they are being evaluated for, this could be either Spanish, French, Chinese, Italian, German, Modern Hebrew, Latin, Japanese or Korean, in order to get a good score in this evaluation the student need certain dominion on the topic.

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.

the answer is b-$11,337.