What is the meaning of the word "assiduous"?

The word "assiduous" means marked by care and persistent effort. It is often used to describe a person who is dedicated, hardworking, and diligent in their pursuits, showing consistent and unwavering effort toward achieving a goal. This quality is highly valued in various contexts, such as academics and the workplace, where perseverance and attention to detail are essential for success.

The other options do not capture the essence of "assiduous." Indifference and apathy suggest a lack of interest or concern, which contrasts sharply with the idea of being diligent and committed. Describing someone as occasionally diligent diminishes the strong connotation of continuous effort conveyed by "assiduous," while labeling someone as erratic and unreliable directly opposes the steadfastness and reliability embodied in the term. Therefore, the correct understanding aligns with the idea of sustained effort and care.