I know he makes his money illegally. There’s no actual saying on what he does, it’s just known that it’s illegally
The information provided is incomplete hence the general answer. Note that a preposition phrase aims to give a description about people, things, location, occurrences in time, etc.
<h3>What is a Prepositional Phrase?</h3>
A prepositional phrase is a group of words that comprise of a proposition, an object belonging to the preposition, and any other words that modify the object.
Another example of a prepositional phrase is:
"With a reusable cloth in his hand, Jake walked back to the owner's garage."
The first part of the sentence above is the prepositional phrase because it provides more information about Jake's activity.
Learn more about prepositional phrases at:
brainly.com/question/11259282
Do you have the text? If you do, I'm pretty sure I can answer it for you.