Which substitution in diction would best improve the setting in the sentence without changing the meaning of the sentence

My best guess, Replace "day" with "warm afternoon".

Example:

One day, a boy walked to his friend's house.

Which substitution in diction would best improve the setting in the sentence without changing the meaning of the sentence?

replace "day" with "warm afternoon"

Replace "a boy" with "Cameron"

Replace "walked" with "drove"

Replace "house" with "school"

Answer: Replace "a boy" with "Cameron"