180. Quasars are so distant that their light has taken billions of years to reach the Earth; consequently,[we see them as they were during ]the formation of the universe.
上記[]内が正解ですが、
D.they apepear to us as they did in が不正解の理由が、解説を見てもよく理解できませんでした。おわかりの方がいらっしゃいましたら、教えていただけないでしょうか。よろしくお願いします。