Correct Answer: pleased

Solution : The third option is the correct answer.

The word enraged refers to a state of extreme anger or fury.

On the other hand, the antonym pleased conveys a contrasting emotional state characterised by contentment, satisfaction, or happiness.

The meanings of the other options are as follows:

• Livid means extremely angry or furiously enraged.
• Aggravated means irritated or annoyed, intensifying a negative emotion.
• Infuriated means extremely angry, often to the point of being out of control.

Therefore, the correct answer is pleased.