Correct Answer - Option 1 : Whisper
The correct answer is option 1, i.e., Whisper.
Yell means a loud, sharp cry of pain, surprise, or delight. So, its opposite must mean something that is said in a soft, low tone.
Meanings of the given words:
Whisper- a soft or confidential tone of voice; a whispered word or phrase.
Scream- a long, loud, piercing cry expressing extreme emotion or pain.
Shout- a loud cry expressing a strong emotion or calling attention.
Shriek- a high-pitched piercing cry or sound; a scream.
Out of the given words, only Whisper can be the appropriate antonym for Yell.