detailed solution

Correct option is B

Pronouns are words utilised in place of nouns. They can only be used once the noun is used or mentioned. Pronouns are of several types, such as personal, reflexive, emphasising, relative, demonstrative, indefinite, interrogative, and possessive. Reflexive pronouns are alternatively called emphasising or emphatic pronouns as these are used for the sake of emphasis. In the given sentence, the speaker’s friend uses emphatic pronoun in the second person to emphasise the message to the speaker. So, the correct way to frame the sentence is, “My friend said to me, “Don’t strain yourself.”