I and him (1)/ are (2)/ very good friends. (3)/No error (4).

Answer

1

Explanation

he will replace him because-
when the Pronouns serve the same function, they share the same case form
He and I are friends. (Pronouns act as Subject and are In Nominative Case)
They talked with him and me. (Pronouns act as ob- jects and are in Objective Case)
Hence, He and I Is the right usage