These are homophones, words which sound identical but have different meaning.
A, vivid nouns produce distinct mental imagery for readers
Answer:
He vigorously promoted the conservation movement, emphasizing efficient use of natural resources. He dramatically expanded the system of national parks and national forests. After 1906, he moved to the left, attacking big business, proposing a welfare state, and supporting labor unions
Explanation:
Answer:
"An objective report of a unique phenomenon of human physiology"
Explanation:
I'm not completely sure because I haven't read the passage but from the title I believe this is the right answer.
I'm sorry if I'm wrong
D. People who disagree with his ideas about nature.