Which sentence correctly uses subject-verb agreement? tommy the clown, as well as the dancers, has agreed to perform at the high school prom. tommy the clown and crew has agreed to perform at the high school prom. tommy the clown’s dancers has agreed to perform at the high school prom. tommy the clown, as well as the dancers, are performing at the high school prom.

The sentence that correctly uses subject-verb agreement is, Tommy the clown, as well as the dancers, has agreed to perform at the high school prom. We used the singular form of the verb which is "has" because it only refers to the main subject which is "Tommy the clown". The phrase "as well as the dancers", is only an additional information and is not part of the subject.