Four alternatives are given for the idiom/phrase underlined in the sentence. Choose the alternative which best expresses the meaning of the idiom/phrase: After getting selected for the job, he has been putting on airs these days.

Correct answer: becoming very boastful

Explanation: Context: The idiom ‘putting on airs’ means behaving in a proud or arrogant manner, pretending to be more important than one actually is. 1. travelling one by air ❌ – literal, not idiomatic. 2. being very modest ❌ – opposite meaning. 3. becoming very boastful ✅ – correct; matches the idiom’s meaning. 4. wearing costly clothes ❌ – partial meaning, not exact.