Question

in a concluding statement, when a writer refers back to keywords, metaphors, questions, or other ideas from the introduction, what does the writer achieve? (1 point)
the writer asks the reader to take action or to think a specific way.
the writer reinforces a message by showing how a particular expert agrees with them.
the writer shows the reader a wider impact behind the topic.
the writer makes the explanatory text feel complete.

Explanation:

When a writer refers back to elements from the introduction in a concluding statement, it creates a sense of closure. The introduction sets the stage with certain ideas, and by revisiting them in the conclusion, the text comes full - circle. This is not about asking for action (which would be a call - to - action), reinforcing with an expert (no expert reference here), or showing a wider impact (more about internal text cohesion). It is about the text's internal structure feeling complete.

Answer:

The writer makes the explanatory text feel complete.