Answer: B
Explanation: Dashes are similar to commas. Reading the sentences aloud can help to understand which one uses the correctly.
I believe it's A, as it's asking for social context of the passage, meaning in what environment it was said at. (I may be wrong, please double check)
Answer:
Testimonial
Explanation:
When you do a testimonial other people have different opinions and everybody has different evidence towards the testimonial which is based on opinion for what you think.