Identify the word that best completes the analogy.

STAR : CONSTELLATION :: CAT ___________.

The relationship between the first pair of words (STAR and CONSTELLATION) must be identified in this analogy. Then, we find a word that shares a similar relationship with CAT.

STAR is a component or part of a CONSTELLATION. A constellation is a group of stars forming a recognizable pattern in the sky.

Now let’s consider the options:

a) CLOWDER: A clowder is a group of cats that matches the relationship between a single cat and a group of cats.
b) TROOP: A troop typically refers to a group of soldiers or scouts. This doesn’t match the relationship between a single cat and a group of cats.
c) PARLIAMENT: A parliament is a group of owls. Again, this doesn’t match the relationship between a single cat and a group of cats.
d) PACK: A pack is a group of wolves.Again, this doesn’t match the relationship between a single cat and a group of cats.

Therefore, Option A is the correct answer.