Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. If there is no error, the answer is 'E'. (Ignore the errors of punctuation, if any).
David did not like leaving his old parents alone in the house but he had no alternative as he has to go out to work.
David did not like
leaving his old parents alone in the house
but he had no alternative
as he has to go out to work.
No error
Correct answer is D
as he had to go out to work