Final answer:
Gary Paulsen likely uses detailed descriptions of the wife's appearance and expressions to evoke an emotional response and provide deep insights into the character's emotional state in the midst of her husband's heart attack. The textual evidence to support this would come from direct quotes from the text.
Step-by-step explanation:
The question appears to relate to a literary analysis of a text that involves a character witnessing a heart attack victim and the reactions depicted through the wife's expressions. Gary Paulsen is known for his detailed and emotionally engaging narratives. In this example, the details he may use to describe the wife's appearance and expression could include vivid descriptions of her facial expressions, body language, and possibly her physical appearance that reflect the shock, grief, and confusion that one might expect from someone witnessing their spouse suffering a heart attack.
Paulsen may include these details to elicit an emotional response from the reader, to create a vivid picture of the scene, and to provide insights into the wife's character and her relationship with the victim. Descriptive passages serve to immerse the reader in the experience and to evoke empathy. Supporting evidence from the text would be direct quotes or passages describing the wife's reactions and interactions with others at the scene.