The correct answer is: A. Is trying to do much.
The idiom “to bite off more than one can chew” means to attempt to do something that is too difficult or challenging. In this case, Rohit is trying to do too much, and he is likely to fail.
Option B is incorrect because it is not necessarily true that Rohit is greedy. He may simply be ambitious and want to achieve a lot.
Option C is incorrect because it is not necessarily true that Rohit is always hungry. He may simply be trying to eat a lot in order to gain weight.
Option D is incorrect
because it is not necessarily true that Rohit has little regard for others. He may simply be focused on his own goals and not be thinking about how his actions affect others.