Many people believed that such an action is unbecoming of a leader

Analyze the question: The underlined word is "unbecoming" in the sentence "Many people believed that such an action is unbecoming of a leader." We need the option closest in meaning.

Explain the concept: "Unbecoming" is an adjective. When used with "of", it means not suitable or appropriate for someone's character, position, or status. For example, "conduct unbecoming of an officer" means behaviour that does not match the dignity expected of an officer. The word "becoming" in this sense means "suitable" or "fitting", and the prefix "un-" reverses it.

Step-by-step solution:

1. Break the word down: un- (not) + becoming (suitable, fitting) = not suitable or fitting.
2. Check the options: • A. forthcoming means about to happen or willing to give information. It does not fit. • B. not befitting means not suitable or appropriate. This matches "unbecoming" exactly. • C. unwanted means not desired. A leader's action may be unwanted, but "unbecoming" is about suitability to a position, not desire. • D. not necessary means not required. This is a different idea.
3. Test it in the sentence: "Such an action is not befitting of a leader" (or "not befitting a leader"). The meaning is preserved.

Answer: The correct option is **B.

Tip: Watch for "unbecoming of/to" in lexis and structure questions. It always points to behaviour that is improper for someone's position. Related words: unseemly, improper, unfitting. Don't be distracted by "becoming" meaning "turning into" (as in "becoming a doctor"). When "of" or "to" follows, the meaning is "suitable".