Question

look at the text below. if there is an error with subject - verb agreement, select the verb and type it correctly. otherwise, submit the text without making any changes.
the star ruby grapefruit and the rio red grapefruit was created through intentional exposure to radiation, which induced the mutations responsible for their red color.

Explanation:

The subject "The Star Ruby grapefruit and the Rio Red grapefruit" is plural, so the verb "was" should be changed to "were" to agree in number.

Answer:

The Star Ruby grapefruit and the Rio Red grapefruit were created through intentional exposure to radiation, which induced the mutations responsible for their red color.