In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from errors, select 'No Error'.  The mobile phone which was primarily used to communicate with the outside world, (1)/ has now become our primary instrument (2)/ of being wrapped up in our own self. (3)/ No error (4) ?

Option 3 : 3

The correct answer is 1, i.e., ​'of being wrapped up in our own self' 

• The sentence uses the pronoun 'we' to talk about all people in general. All people is plural. Thus, there is an error in (3) as 'self' is singular
• Plural of self is selves.

Thus, the correct sentence is: The mobile phone which was primarily used to communicate with the outside world, has now become our primary instrument of being wrapped up in our own selves.

Confusion Points

• Note: Here, the subject of the sentence is 'the mobile phone' and hence the verb 'has' has been used correctly.