Which word is used incorrectly in the following sentence?
My keys are in the bag which I bought in that Mexican village we visited last year.

Question

Quizplus · Accepted Answer

"Which" is used to introduce non-essential clauses. A non-essential clause adds information to the sentence but is not necessary to make the meaning of the sentence clear. Use commas to set off non-essential clauses.
"That" is used to introduce essential clauses. An essential clause is needed to make the sentence clear. Do not use commas to introduce an essential clause.
Since "I bought in that Mexican village we visited last year" is an essential clause, the correct sentence should read:
My keys are in the bag that I bought in that Mexican village we visited last year.

Which Word Is Used Incorrectly in the Following Sentence