Answer:
the author's purpose is to persuade readers that sugar production created a system that relied on slavery but also paved the way for revolution
The dog. it tells u what he was doing and where he did it.
Past tense because the verb isolated is written that way.
Option A: How well do elements of the text help the text achieve its goals?
The two last options are related with the interests of the reader and not only with the text. The option B, is not exactly about the text but more about the author. The option A really intends to assesses the text.
Answer:

Explanation:
Notice that each answer choice has a common theme of violence.
However, choices B (violence in popular music), C (violence in video games), and D (violence on television shows) are concentrated on one area/place where violence is prevalent. They are not very broad.
On the other hand, choice A (violence in society) is probably too broad for a 10 minute speech. There is all sorts of violence in society as a whole and there are too many things to touch in a ten minute time period.