Answer:
A. It has an antonym relationship with curious instead of a synonym relationship.
Step-by-step explanation:
A - It is A because an antonym is the opposite of a word or action being described. Bored is the opposite of curiosity. While the previous analogy (smart: clever), reflects a synonym relationship
B - The following is not B because the definition of a part-whole relationship is the representation of a part of something to a whole of something. For example, fin is to fish as wing is to bird. In the example, curiosity and boredom are both emotions but are not however a part of each other.
C - It is not C because an antonym is not used in the analogy from smart to clever, neither is curiousity and boredom a direct relationship to a synonym, which means to words of similar meaning.
D - The following is not D as it does not reflect a cause and effect relationship to boredom, i.e. there is no direct cause of going from curiosity to boredom.