In the following sentence, out of the given alternatives choose the one which best expresses the meaning of the underlined word.

They were diligent in the performance of their duties.

Correct option is C

The correct answer is (c) industrious. The word "diligent" refers to someone who is careful, hardworking, and persistent in doing a task. A diligent person pays attention to details and puts consistent effort into their work.
Information Booster
1. “Diligent” comes from Latin diligens, meaning “attentive or careful.”
2. It implies steadiness, effort, and perseverance in completing duties.
3. Example: “She is a diligent worker who never misses deadlines.”
Additional Knowledge
· (a) sincere: Implies genuineness and honesty of intent
· (b) truthful: Means honest or not lying
· (d) meticulous: Means showing great attention to detail but can apply to even small tasks done slowly