Step 1: Understanding the Concept.
A dirge is a mourning song performed at a funeral, which is the ceremony marking death, the opposite of birth. So the relationship is: the second word is an act or ritual performed at the event that is the antonym (opposite) of the first word.
Step 2: Check option A.
Sunset and sunrise are simply a pair of opposites with no “ritual performed at the opposite event” relationship, so this does not match.
Step 3: Check option B.
A security check happens around arrival itself, not at some opposite event of arrival, so this does not match either.
Step 4: Check option D.
A welcome address and a vote of thanks are both parts of the same single event, not opposite events, so this does not match.
Step 5: Check option C.
Alimony is a payment made upon divorce, which is the opposite (ending) of marriage, exactly mirroring how a dirge is performed at death, the opposite of birth.
Step 6: Final Answer.
Option C, marriage : alimony, is the correct analogy.