Answer:
The description helps readers understand how Alfonso's concern about his appearance is affecting him. The description of his thumbs after pushing on his teeth as "tired and wrinkled and pink" shows how far Alfonso will go to improve his image. The comparison of his bike to "a handful of dimes" shows how careful he is. These descriptions contribute to the theme that the way you look does not always reflect who you want to be.
Step-by-step explanation:
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