The one that is the best way to find the correct answer for a sentence completion question on a reading test is : c. look at the main parts or the paragraph and infer the answer
The main parts is basically the core of the content. If you find it, it would be really likely that you could answer a question about it
hope this helps
The tone in the last stanza is regretful. The poem is about a man who received advice from a wise man that he can give away all his wealth but not his heart. He's told that once you give away your heart, you lose it and end up regretting it. He experiences it and regrets afterwards.
The best way to increase reading comprehension is to read more often.
Reading different types of books, with different subjects and content,
will condition your brain to retain more information over time. This
will also give you the ability to read more quickly.