Question

Q I said to him, "Why are you working so hard"?
la lasked him why he was working so hard.
(b) I asked him why was he working so hard.
(c) I asked him why had he been working so hard.
(d) I asked him why he had been working so hard.​

Answer 1

i think option a is correct

Answer 2

Answer:

I asked him why he was working so hard.

option a is correct.

*here the reporting verb is in past tense and the sentence is in present tense so we would change the sentence into past tense.

if the sentence is in simple past then we would change it into past perfect.

hope it helps you...

^.^