If their environment changes to have only long flowers, Which of the following hummingbird populations will most likely survive? A. (I got that wrong)

B. All the populations will survive because the hummingbirds will change the length of their beaks if they need to.

C. Populations 1 and 2 will survive.

D. Populations 2 and 3 will survive.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!