Subject Verb error :
is/are -- "is" is correct as the subject is Singular. This cancels option A and B
less/ fewer -- "fewer" is to be used in case of countable quantity. This cancels option E
We are now left with C and D.
Debated about could be unidiomatic or awkward construction. Hence the incorrect choice.
The choice D conveys the correct meaning.
Hence D is correct
I will give a Fight till the End
"To dream anything that you want to dream, that is the beauty of the human mind. To do anything that you want to do, that is the strength of the human will. To trust yourself, to test your limits, that is the courage to succeed."
- Bernard Edmonds
A person who is afraid of Failure can never succeed -- Amneet Padda
Don't Forget to give the KUDOS