In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
I (has failed) in my eleventh grade chemistry paper.
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'.
He explained that the pillars of tribalism (1)/ that humans rely on for security would always (2)/ counter any significant culture or social change. (3)/ No error (4)