In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and click the option corresponding to it. If the sentence is free from error, click the 'No error' option. One of the most pleasant things (P) / in the world are (Q) / going on a journey. (R) / No error (S)?

Option 2 : Q

The error lies in part Q of the question. Therefore, the correct answer is option 2.

One of the ___ refers to one thing out of a group of two or more similar things. So the noun followed by ‘one of the’ is always a plural noun and the verb followed will be singular or plural depending on the subject.

For example, Mumbai (subject is singular) is one of the cities that impresses me.

Apples (subject is plural) are one of the few fruits that are eaten by me. 

Here, the sentence tells us that out of many pleasant things to do in life, one of them is to go on a journey,

Correct sentence - One of the most pleasant things in the world is going on a journey.