Transform the given sentence into interrogative form. Choose the correct answer from the options given below– “There is nothing better than an active life,”

The original sentence is a negative comparison: "nothing is better than X" means X is the best. The interrogative that keeps this sense is a rhetorical question: "What is better than an active life?" The listener is expected to conclude that nothing is better, so the meaning survives without a negative word.

Why the others fail:

• B is ungrammatical. "In not an active life the best?" has no valid structure.
• C changes the meaning. It asks whether you know a fact, not whether anything is better than an active life.
• D is also faulty. "Do you know an active life is the best?" is missing the "that" clause and asks about knowledge rather than comparing alternatives.

The core concept is transforming sentences (assertive to interrogative) while preserving meaning. It is a staple of the English section in Prelims and helps with precise expression in Mains essays.

Trap: choosing C because it looks like a question carrying the same sentiment. It asks about knowledge, not about the superiority of an active life.