The correct answer is:
A. Life is an eternal struggle.
"Life is an eternal struggle" is the poet suggests about human life with the images in these lines.
<span>Because the fire trucks arrived immediately, the house was saved.
the cause is the fire trucks arrived immediately</span>
I believe he did that in order <span>to teach children how to interact with adults.
He was aware of his own surroundings in which children were impolite towards adults so he wanted to show what happens in the animal world. He wanted to portray young animals as polite and respectful, unlike human children who were unruly.</span>