Step 1: Understanding the Question:
The question gives an analogy in the form Water : P :: Food : Q, and asks us to pick the pair of words P and Q that keeps the same logical relationship between Water and P as exists between Food and Q.
Step 2: Key Formula or Approach:
In this kind of analogy, the first word in each pair is a substance a person consumes, and the second word must be the specific physiological need or drive that this substance relieves. Water relieves thirst, so P should be the word that names the need Water satisfies. In the same way, Food relieves hunger, so Q should be the word that names the need Food satisfies. Both P and Q must belong to the same category of need or drive, not a synonym of the substance and not an unrelated word.
Step 3: Detailed Explanation:
Checking option (A): P = Thirst and Q = Hunger. Water is what removes thirst, and Food is what removes hunger, so Water is to Thirst exactly as Food is to Hunger. Both P and Q describe the specific bodily need satisfied, so the relationship is consistent and parallel on both sides.
Checking option (B): P = Drink and Q = Hunger. Drink is only another word for a liquid similar to Water, not the need that Water satisfies, so Water : Drink is not the same relationship as Food : Hunger. The two sides of the analogy no longer match, so this option is incorrect.
Checking option (C): P = Thirst and Q = Satiated. Thirst is a need, which is correct for the left side, but Satiated is a state of being full rather than the specific need called hunger, so the right side breaks the pattern established on the left side. This inconsistency rules out option (C).
Checking option (D): P = Wet and Q = Critic. Wet describes a physical condition and Critic is a completely unrelated word describing a person, so this pairing has no logical connection to the Water and Food theme at all, and is clearly wrong.
Step 4: Final Answer:
Only option (A) keeps the same substance relieves need relationship on both sides of the analogy, matching Water : Thirst with Food : Hunger.
\[ oxed{P = Thirst; \ Q = Hunger} \]