(A) staunch allies
The word staunch means loyal, firm, and reliable. At work, allies who “won’t let you down” must be loyal and dependable.
(A) → (IV)
(B) scrupulous honesty
Scrupulous means extremely careful to be morally correct and honest. This perfectly describes a form of honesty that is greatly admired.
(B) → (I)
(C) deeply critical
Deeply is used to emphasize the intensity of criticism. Being “deeply critical” shows strong disapproval, which explains why it felt unfair.
(C) → (II)
(D) bitter rivals
Bitter describes strong hostility or resentment. “Bitter rivals” is a common and appropriate expression in competitive contexts like the workplace.
(D) → (III)
Final Matching: Option 3: (A) – (IV), (B) – (I), (C) – (II), (D) – (III)