The lecturer's wife has become quite unconscionable.

Analyze the question: You are asked to find the word closest in meaning to "unconscionable" as used in the sentence.

Explain the concept: "Unconscionable" means not guided by conscience; morally wrong, unreasonable, or excessive. Break it down:

• un- = not
• conscion- (from "conscience")
• -able = capable of

So it describes behaviour that a person's conscience could not accept, something unjust or shameful. Examples: "unconscionable cruelty" or "an unconscionable delay."

Go through the options:

• A. unquestionable: means certain, beyond doubt. It looks similar in form but has no moral meaning. Wrong.
• B. unbecoming: means not suitable or not flattering (e.g., "unbecoming behaviour"). It is close in tone, but it describes improper manners and not serious moral wrongdoing. It is a weaker meaning.
• C. suspicious: means arousing or feeling doubt. It does not match. Wrong.
• D. reprehensible: means deserving blame or condemnation, morally wrong. This matches "unconscionable" most closely.

Answer: D. reprehensible

Tip: When you see an unfamiliar word, look for the root. "Unconscionable" contains "conscience," so think "lacking conscience, morally wrong." Then pick the option with a moral-blame meaning. Also beware of look-alike words like "unquestionable": similar spelling does not mean similar meaning.