Hot under the collar means angry or annoyed. 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: Hot under the collar can refer to a situation involving angry or annoyed.
• Story example: A writer may use Hot under the collar when describing a situation involving angry or annoyed.
• Exam example: When a sentence contains Hot under the collar, choose the meaning “angry or annoyed.”