"so what did you think about the reading assignment "

this is an example of which effective discussion technique ?

a) asking open-ended questions
b) proposing a claim
c) asking forced-choice questions
d) making sure you're heard

A) asking open-ended questions.

Explanation:

This is an example of asking open-ended questions. The reason why open-ended questions are effective is because they force the person who is replying to explain in detail what his answer is. This allows new ideas to be discussed and debated. In this case, by asking "so what did you think about the reading assignment?" the first speaker is employing this successful strategy.

what is the context here? we need to know what story you're talking about : )