Correct Answer: Lauded

Solution : The correct choice is the second option .

Sneer means to express contempt or scorn through a facial expression or a manner of speaking. The antonym, lauded, means to praise or commend someone or something highly.

The meanings of other options are as follows:

• Waved means to move one's hand or something held in the hand to and fro as a greeting or sign of farewell.
• Unleashed means to release or set free.
• Ascribed means to attribute something to a particular cause or source.

Therefore, the correct answer is lauded.