Which sentence correctly uses the word 'contribute' to show giving to help others?

• A. She decided to contribute nothing to the team.
• B. He contributed to the debate by avoiding the topic.
• C. She decided to contribute to the charity by volunteering every weekend.
• D. They contributed to the confusion by staying silent.

Answer: (C)

Contribute means to give something—like time, money, or effort—toward a shared goal or to help others. Here, volunteering every weekend to the charity shows giving personal time to support a cause, which is exactly contributing to help others. The other sentences either show not giving, or a non-helpful or even harmful form of contribution, so they don’t fit the idea of giving to help others.