4.
Your Answer is
Correct Answer is J
Explanation
The main clause when appears at the beginning of the sentence before the underlined part, so the underlined part should be separated by a comma from the main clause. JCorrect.
4.
Your Answer is
Correct Answer is J
Explanation
The main clause when appears at the beginning of the sentence before the underlined part, so the underlined part should be separated by a comma from the main clause. JCorrect.