Answer: A) Whoever produced that TV program on whales did a great job.
Step-by-step explanation: it is common to be confused with the use of the words "whoever" and "whomever." Whoever is used as the subject of the phrase, while "whomever" is always the object. From the given sentences, the only one that uses the pronoun "whoever" correctly is option A, because "whoever" is the subject of the sentence. All the other options are incorrect, because they should use "whomever" (because it represents the object).