For which purpose and audience would a website be the most effective? A. Asking someone to go to the prom
with
you
B. Applying for a job at the shoe store at the mall
C. Inquiring about volunteer opportunities for a local political
candidate
D. Informing the student body about the school's new recycling
program

I think D.
Informing the student body about the school’s new recycling programme.

For all of the others above, a website isn’t needed, as they can all be talked over in person or over the phone, but to inform a large amount of students, a website would be most helpful, considering that there are a lot of students and that they are all technologically advanced as well.

:)