How is the underlined pronoun used in the sentence?

i received a five-page letter from him in the mail yesterday.

a.
direct object

b.
object of a preposition

c.
indirect object

may i see the passage?

that his long years of service outweigh any faults he may have had.

he wanted to be remembered for the good things he did, one of those being when he gave up office so others would follow suit, but george washington wasn’t a man who thought he was perfect, he knew he made mistakes. he was a very talented soldier with a natural gift of tactic.