Answer:
appear , manifest, reveal,convey
Explanation:
The characters are talking animals. Any other option would be logical and easy to explain, but talking animals don’t exist unless you consider a parrot. Nonetheless, the other options are logical and realistic while the last option is not at all realistic. Most children’s books are not realistic.
Silent Spring by Rachel Carson was an environmental science book. It documented the negative effects the indiscriminate use of pesticides has on the environment, particularly the birds.
The book became the tool that awakened the public to the real harm that big industrial companies have been hiding from them. Thus, driving them to launch an environmental movement that aims to prohibit the indiscriminate use of pesticides, specifically DDT.