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. It is strange that (1)/even after fifteen years of experience, (2)/he is still not (3)/ able to be performed. (4)/No error (5)?

Option 4 :  able to be performed

Correct Option - 4

The error lies in part (4).

The given sentence is in the present tense. So, ‘to be performed’ will change to ‘to perform’ because the phrase 'to be' is used in the context of the future tense. 

For example: I don't think that she will be able to be a part of the upcoming event.

Hence, in the given sentence option 'able to be performed' is not correct. Thus, option (4) is the right choice. 

Correct sentence:

It is strange that even after fifteen years of experience, he is still not able to perform.