Which is the correct transformation of "He is not interested in sports." using "care"?

The statement "He is not interested in sports" conveys a lack of interest or enthusiasm. The transformation that communicates this sentiment most clearly while using the word "care" is "He doesn't care about sports." This phrase directly translates the idea of indifference or lack of interest, aligning perfectly with the original statement.

Using "doesn't care" specifically denotes a refusal to concern himself with sports, reflecting the same sentiment of disinterest. The addition of "about sports" emphasizes the subject matter in question, maintaining the context of the original sentence.

Other options may not fully capture the intended meaning. For instance, "He cares little for sports" suggests a very minimal interest but not necessarily a total absence of interest, which can slightly alter the original implication. "He doesn't care for sports" is similar, but it often has a somewhat dated connotation, potentially implying a stronger aversion rather than simple disinterest. "He is not caring about sports" is not idiomatic and sounds awkward, failing to convey the same clear meaning as the correct transformation.