<span>D.
They both lived through violent childhoods.</span>
By calling them lemmings he wanted to call the attention for people that dont have original ideas to share.
A.It is an adverb clause modifying set.
Explanation:
<span>A. Henry’s idea of warfare has been heavily influenced not by experience or reality but by the heroic tales he has grown up with.
</span>
Answer: A. to emphasize the seriousness of his words.
Explanation: