Out of the choices given, the thing that comes first in an online catalog entry is the author's last name. This is so any person can find the book easily and in alphabetical order. The correct answer is D.
The connection between Mrs. Yang's gardening and Samara's idea to build a park is "Residents agreed that Mrs. Yang would manage the gardens."
Samara realized there were no public spaces for people to relax enjoying nature. When she saw Mrs. Yang gardening and her ability to do such a thing and regarding her experience and knowledge in gardening in Korea, Samara thought it would be a great idea for her to manage the park building and guide other people to help with the community garden.
This paragraph is stating that no matter who, or what you are, we all come from the same blood and live on the same earth.
Direct quotation because its directly from the text