Correct Answer: praise

Solution : The correct choice is the first option.

The antonym for denounce is praise . "Denounce" means to condemn or express strong disapproval, while "praise" means to express approval or admiration.
The meanings of the other options are as follows:

• Relieve : To alleviate or ease a burden.
• Criticise : To express disapproval or find fault with.
• Dainty : Delicately small and pretty.

Therefore, the correct answer is praise.