Select the option in which the words share the same relationship as that shared by the given pair of words.
shrug : indifference :: ?

To solve this analogy, we need to understand the relationship between "shrug" and "indifference."

A shrug is a gesture that typically expresses indifference.
We need to find a pair where the first word is a gesture that typically expresses the second word.

Let's analyze the options:

A wave : fatigue - A wave is a gesture that does not typically express fatigue.
B blink : scorn - A blink is an involuntary action, not a gesture expressing scorn.
C scowl : desire - A scowl is a facial expression that typically expresses anger or displeasure, not desire.
D nod : assent - A nod is a gesture that typically expresses assent (agreement or approval).

Hence, only the relationship in option D matches the relationship in the given pair: a gesture expressing a specific feeling or state.

Therefore, option D is the correct answer.