The answer is
connotations, diction, the speaker, the topic
He would benefit from seeing a live performance because he could then see experienced actors play out the emotions, therefore giving him a more in-depth look on the feelings. This would make his essay much more fleshed out and analytical.
Answer:
Heart of stone
Explanation:
The saying "Heart of stone" is a figure of speech, you can't actually have a heart made of stone.