Step 1: Recall the grammatical patterns that can follow the modal auxiliary will. It may be followed by:
- the base form of the verb, as in “will make,” which expresses the simple future, or
- be + verb–ing, as in “will be making,” which expresses the future continuous tense.
Step 2: Both of these structures are grammatically correct in English and are commonly used. The choice between them usually depends on context or intended nuance, but neither form is incorrect from a grammatical standpoint.
Step 3: Since the question is testing grammatical correctness rather than subtle differences in meaning, both constructions are acceptable. Therefore, option (C) is the appropriate answer.