In making wedding preparations, jacinta conforms to the expectations of her future bride's family simply to win their favor. her behavior illustrates the importance of . social facilitation
b. normative social influence
c. informational social influence
d. the chameleon effect

normative social influence

Explanation:

As human beings live in society, this implies that in the face of constant contact with other people who think and feel differently, there will be a social influence on changes in behavior and even the perception of others. The influence derives from the subject himself considering what is requested or acting according to the wishes of the other

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.