Rewrite the sentence in indirect speech.
He said to him, "Is not your name Krishna?"

Correct option is A

Explanation: Direct questions with "Is not your name Krishna?" are converted into indirect questions using "whether," and the verb "is" changes to "was" to reflect the past tense in indirect speech. The structure changes to include "whether" for yes/no questions.
Grammatical rule used: Direct yes/no questions are reported with "whether" or "if," and the verb tense changes to past in indirect speech.
Example: "Is your phone charged?" he asked him. -> He inquired him whether his phone was charged.