I'd say D, everyone knows that money doesn't grow on trees.
Synonym clue, because a Synonym is a word that is exactly like or nearly like another word, if the word trying to be explained is explained by comparing it to another word is is exactly or nearly like it it is a Synonym Clue.
Answer:
answer in explanation
Explanation:
This is so because since the star is so far away that by the time it explodes and we see it it will have already been in the past.
Lose is to lost as found is to find
