Final answer:
The correct answer is (E) wince is to pain, as this option represents an involuntary expression associated with the specified emotion, similar to how yawning is associated with boredom.
Step-by-step explanation:
The provided analogy question asks to find a relationship between a yawn and boredom that is similar to another pair of words.
In this context, a yawn is an expression commonly associated with boredom. The best answer would be an expression that is similarly associated with a particular emotion or state.
Looking at the options provided: (A) enrage is to anger suggests a cause to a feeling, not an expression of that feeling.
(B) expect is to surprise suggests anticipation not an expression. (C) smile is to laughter is closely related because a smile is often an expression associated with the feeling, or onset, of laughter.
(D) shrug is to shoulder is incorrect as shrug is an action related to a body part not an emotion. (E) wince is to pain is a reflexive response to pain, similar to how a yawn is often reflexively linked to boredom.
Thus, the correct answer is (E) wince is to pain, as a wince is an involuntary expression to the emotion or feeling of pain, similar to how a yawn is an involuntary expression to feeling bored.