Select the most appropriate option that can substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’. I haven’t found a job yet but I am going to keep trying .

Explanation

The correct answer is 'No substitution required'. Key Points The given sentence has no grammatical error. There is no error in 'keep trying' part of the sentence. Keep trying is an idiom that means to continue putting forth effort to succeed at some task, activity, endeavor. Example: Don't give up, keep trying , you are on the right path. From the given meaning of the idiom and its example sentence, we are sure that it's usage in the above sentence brings the same sense as its meaning. Therefore, the correct answer is option 3.