correct sentence: arent these all questions: A)whom needs a ride to the concert? b}for who this letter is? C)whom are we following? D)to who does that dog belong? i choose a.

Only C is correct.

A. Who needs a ride to the concert?
("Who" is the subject of the sentence; therefore, there's no "m" on it.)

B. For whom is this letter?
("whom" is an object; therefore, there needs to be an "m" on it.)

C. Whom are we following?
("Whom" is the direct object of the verb "are following")

D. To whom does that dog belong?
("whom" is an object; therefore, there needs to be an "m" on it.)

http://www.elearnenglishlanguage.com/difficulties/whowhom.html

The correct sentence is "A) Whom needs a ride to the concert?"

Great choice! The correct sentence is: "Who needs a ride to the concert?" Here's an explanation of why this is the right option:

To determine whether to use "who" or "whom," you need to consider the role of the pronoun in the sentence. In this case, the pronoun is the subject of the verb "needs," so it should be in the subject form, "who."

To break it down further:
- For a question about the subject, use "who." Example: "Who is going to the party tonight?"
- For a question about the object, use "whom." Example: "Whom did you invite to the party?"
- If you're unsure about "who" or "whom," try rephrasing the question. For example, you can rephrase the question "Whom do we follow?" as "We follow whom?"

In option A, the pronoun "who" is the subject of the verb "needs," making it the correct choice for this question. Good job!