The answer is:
It represents his depart from China to begin a new life in the United States.
In the poem "Garden of My Childhood," the author Kuangchi Chang compares his native country China to a childhood garden and mentions his decision to leave it for a new garden, meaning America. Moreover, he wonders what the future will bring there.
Answer: I believe the correct answer is B.
federal combines both unitary and confederal political systems