Answer:
"He," "him," and "his" are third person singular pronouns, and "they," "them," and "their" are third person plural pronouns. Novels are usually written in third person.
Answer: No, you can not say it is possibly. You must say, in order to be grammatically correct, it is possible.
Hope this helps! :)
Explanation:
The only preposition in this sentence is the word of.
