All the colleagues of his office hold the view that Mr. Ali is a very wise and _ intelligent officer.

Explanation

"All the colleagues of his office hold the view that Mr. Ali is a very wise and intelligent officer."Here's why:- No article is needed before "intelligent" because it's an adjective modifying the noun "officer", and adjectives typically don't have articles.- The sentence already uses "a" before "wise" to indicate that Mr. Ali is wise to a certain degree, so adding another article before "intelligent" would be redundant.