Bring to heel means force someone to obey or submit. 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: Bring to heel can refer to a situation involving force someone to obey or submit.
• Story example: A writer may use Bring to heel when describing a situation involving force someone to obey or submit.
• Exam example: When a sentence contains Bring to heel, choose the meaning “force someone to obey or submit.”