Question

which of the following is an example of effective feedback?
\that doesnt make sense at all.\
\thats wrong, and heres why.\
\i think i understand. do you mean...?\
\you should just stop talking.\

Explanation:

Effective feedback should be constructive. "That doesn't make sense at all" and "You should just stop talking" are dismissive and not helpful. "I think I understand. Do you mean...?" is more of a clarification - seeking statement rather than feedback. "That's wrong, and here's why" provides a clear assessment (it's wrong) and then offers an explanation (here's why), which is constructive and thus effective feedback.

Answer:

"That's wrong, and here's why."