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 error, select ‘No Error’.

When one stops being optimistic, one believes that he/ she (1)/ is worthless, and stops hoping for a better future, (2)/ it is only then that the moment of actual failure happened. (3)/ No error (4)