Parts of the following sentence have been given as options. Select the option that contains an error.
I have sing ‘Let It Go’ before a crowd of thousands of people.

Correct option is C

Option (c) "I have sing" contains an error.
· The verb "sing" is incorrect here because "have" requires the past participle form of the verb.
· The correct phrase should be "I have sung" instead of "I have sing".
Grammatical rule used:
· The present perfect tense follows the structure:
· Subject + have/has + past participle (V3).
· Example:
· Incorrect: I have write a letter.
· Correct: I have written a letter.