The story is in the screenshot, I hope it helps you :)
Answer:
Muir's solo voyage was hampered by streams, bogs, and swamps. In the third paragraph, he describes how he was feeling sad and confused as the sun set, but then he saw a rare "beautiful Calypso" that had survived the frigid temperatures, and he sat beside it, overcome with wonder and happiness. He felt motivated and powerful without exhaustion or hunger. Nature fascinated, surprised, reassured, and rewarded him. There are many ways that nature can make you happy, and he uses words like "rejoicing" and "glorying" to describe how free he feels there.
Wordsworth begins his poem while strolling alone, contrasting his feelings to those of nature ("lonely as a cloud"). He finds comfort in a field full of daffodils. They formed a seemingly unending row while bobbing their heads and dancing. Wordsworth had fun since he wasn't missing out. Joy comes from nature and his past.
Explanation:
This is my opinion only so please feel free to alter as you see fit.
A few things he would study might be: When did people start speaking a language? Who was the first person to have green eyes?
Basically, an anthropologist is somebody who studies mankind/humans.
I believe it is the third one.