The correct answer is: D. Boredom
Cringe is a physical reaction to something that is unpleasant or embarrassing. It is often accompanied by a facial expression of disgust or fear. Yawning is a natural reflex that occurs when we are tired or bored. It is also a social cue that we are not interested in what is happening around us.
The relationship between cringe and fear is that cringe is a physical reaction to something that is unpleasant or embarrassing, and fear is a feeling of anxiety or dread about something that is likely to cause pain or harm. The relationship between yawn and boredom is that yawn is a natural reflex that occurs when we are tired or bored, and boredom is a state of being weary and restless through lack of interest.
The other options are not correct because they do not have the same relationship as the original pair of words. Worry is a feeling of anxiety or concern about something that might happen. Anger is a feeling of displeasure or hostility. Reaction is a response to something that has happened.