Eager beaver means a very enthusiastic and hardworking person. This answer is correct because the expression has a fixed figurative meaning in English. In an SSC idiom question, students should match the whole phrase with its accepted meaning rather than translate each word separately.

• Classroom example: Eager beaver can refer to a very enthusiastic and hardworking person.
• Story example: A writer may use Eager beaver when describing a very enthusiastic and hardworking person.
• Exam example: When a sentence contains Eager beaver, choose the meaning “a very enthusiastic and hardworking person.”