How do I start of with my sentence

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.

Does anyone know the answers to these two? i don’t want to have to guess, you!

How does the author introduces his idea of fish depletion in the first few pages of world without fish?