Your answer that you are looking for is genes so its a genes
If you are asking the difference between the two words, then a partner means a pair of two people working together on a project or activity, where as a friend is a person in which one has a close bond or relationship with that is platonic.
I believe that the answer could be D. I hope this helps
Answer:
A intro of the story, background of main characters, main events, main details, main ending.
Explanation: