Correct Answer: Energetic

Solution : The correct choice is the first option .

The most appropriate antonym of the given word is energetic. Indolent means not wanting to work, or lazy, and its antonym energetic means full of energy and enthusiasm.

The meanings of the other options are as follows:

• Listless means tired and without energy.
• Torpid means not active.
• Languid means to move or speak slowly or with less energy.