Choose the correct sentence.

A) Her and I are going to be good friends.
B) She and I are going to be good friends.
I answered B

Right.

You have chosen the correct sentence, which is B) "She and I are going to be good friends."

In order to determine the correct answer, you can analyze the subject pronouns being used in the sentence. The pronouns "she" and "I" are both subject pronouns, which means they are used as the subject of the sentence. Therefore, the correct sentence should use the subject pronouns "she" and "I."

A common technique to check if a sentence is correct is to remove one of the pronouns and see if it still makes grammatical sense. If we remove "and I" from option A, we get "Her are going to be good friends," which is incorrect. However, if we remove "and I" from option B, we get "She is going to be a good friend," which is grammatically correct.

Therefore, the correct sentence is B) "She and I are going to be good friends."