Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
His wife gave birth to their first child. He understood what true responsibility
A.(2) Were his first child not to be born, he wouldn’t understand true responsibility.
B.(4) Not until he became a parent did he understand what true responsibility meant.
C.(1) Never has he understood true responsibility before he became a parent himself.
D.(3) Hardly had he understood true responsibility when their first child was born.