What is the central idea of these panels

This rocky canyon in the desert is not the deepest canyon or the whitest which best identifies the adjective phrase

Read the sentence. on days when i go jogging in the morning, my mind seems to process ideas faster, and my mood is more positive. how does the underlined clause add variety and meaning to the sentence? select two options. it describes the days being discussed. it makes readers want to go jogging. it creates a compound-complex sentence. it adds detail about the speaker’s personality. it explains why jogging is beneficial.

Which theme is best supported by the descriptive detail in this passage from my antonia