Parts of the following sentence have been given as option. Select the option that contains a grammatical error. If you don’t find any error, mark ‘No error’ as your answer.
I am having trouble / deciding in / a gift for them. / No error

Correct option is D

The error is in option (d) "deciding in". The correct phrase is "deciding on".
· The verb "deciding" is followed by the preposition "on" to indicate the choice or selection of something. The preposition "in" is not used in this context.
· Therefore, the correct sentence should be "I am having trouble deciding on a gift for them."