Since an antonym is an opposite, like a synonym is a similar word, the opposite of aggressive would be meek.
Answer: Lucas makes it a habit to only watch the stunts the skateboarders did.
Explanation:
Split Infinitive is when a construction simply contains the infinitive and an adverb which is the inserted between them.
The sentence that must be revised to eliminate a split infinitive is that "Lucas makes it a habit to only watch the stunts the skateboarders did".
