The noun 'committee' is a: MCQ with Answer and Explanation

Explanation:
It should be 'ten-year-old'.

Explanation:
Standard: 'five-foot-tall man' or 'five feet tall'. 'Five foot tall' is often used informally but hyphenated is preferred. I'll consider it an error if not hyphenated. In many exams, 'five-foot-tall' is required. So error at 'five foot'.

Explanation:
Group of ships.