English question for the day.(EQAD)

Friends, here i am starting to post one question on english every day with explainnation. Question might be on word usage, grammer, parajumbles etc. I hope this will help many of ouie fellow CAT aspirants

Here is the question for the day
The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E

Answer this question in the poll.

Regards,

Ameya