Answer C seems more accurate-than the others
You need to check each sentence for errors. If there's an extra letter, such as the "s" in "reads" (#1) you need to use the symbol which deletes a letter. If a sentence/word is missing a word/letter... you need to use a symbol to show that a word/letter should be shown there.
Answer: A friend is a person with whom I may be sincere.
Explanation:
The speaker says that a friend is someone they can be sincere with. This means that to the speaker, the underlying advantage of friendship is sincerity. Friends can be honest and truthful with one another more than others and so it can be said that honesty holds a friendship together.
This is why honesty is important in a friendship. If friends cannot be honest with one another, the friendship is fractured and according to the speaker, cannot even be referred to as friendship.
You can use the words singling out