I would definitely say that this is the first option: Teenagers' concerns about appearance can affect their feelings about themselves.
Why do I think this? Well let me explain. In the first passage, the person specifically prays for the boy they fell in love with, as well as a new nose. That would indicate that they aren't happy with the way they look.
Now onto the second passage. Alfonso believes that he has to be in amazing shape to get the girls in "cut offs" to notice him, and to think that he's strong and handsome. He wants them to think that he's capable of handling himself, no matter the circumstances. It also states that he hates the way he looks. He's insecure about what he looks like.
I hope that this helps you.
"Marigolds" takes place in a rural African-Amercian community during the 1930s. While reading the story you can see how the setting influences the narrator's experiences and the conflicts she faces. The last two sentences develop the idea that the narrator is learning the importance of understanding what makes a person unique: " For one does not have to be ignorant and poor to find that one’s life is barren as the dusty yards of one’s town. And I too have planted marigolds". You have to accept things as they are, without thought or question.