Select the most appropriate antonym of the given word.

INDOLENT

The correct answer is Diligent.

Explanation:
The word INDOLENT means wanting to avoid activity or exertion; lazy, sluggish, or avoiding work.
To find the antonym (opposite in meaning), let's look at the given options:

1. Slothful: Lazy or idle. This is a synonym of indolent.
2. Inactive: Not engaging in action or movement. This is a synonym of indolent.
3. Careless: Not giving sufficient attention or thought.
4. Diligent: Showing care, effort, and thoroughness in work or duties; hardworking and industrious.

Since Diligent means hardworking and active, it is the exact opposite (antonym) of Indolent.