Fill in the blanks with the most suitable option._________________ completed his final project just in timeAWhoeverBItCHerDHe

To determine the most suitable option for filling in the blank, let's analyze each choice:

1. A: Whoever - This is not a correct fit as it does not refer to a specific subject completing the project.

2. B: It - This could refer to something that was completed, but it lacks clarity and is not a suitable subject.

3. C: Her - This could fit if the intended subject is female, but without context, we can't confirm this.

4. D: He - This option clearly indicates a male subject completing the project.

Given that "He" is the only option that clearly works as a subject in this sentence, the most suitable option is:

Final Answer

D: He completed his final project just in time.