I believe that the choice we have is between "inform", "persuade", "entertain", etc: and I would say that here the purpose is to persuade. It's not an objective sentence only giving information, rather it tries to persuade people to choose this product over another one.
B. Audience is restricted
This is because ceartin people are being censored, or shielded from, ceartin content.
Answer:
Metaphor.
Explanation:
Although the light is not actually chains, it compares the two things to help the reader visualize the lights.
I believe part A. is C. and part B would be A. or D. Sorry if this doesn't help
The protagonist's choice is either changed or stays the same. depending on what the choice is.