Answer:
False.
Step-by-step explanation:
To write a critical essay that is a form of academic writing you must focus on a particular idea or theme and support it or attack it.
Characterization is not too broad for a critical essay, there are two main types of it, direct or indirect. If you want to write you could present each type in different paragraphs and then support the one you prefer the most giving claims to support your position.
I hope this answer helps you.