Question

hannah created a blog to help readers find and purchase her new album. the main purpose of her blog is to
persuade.
entertain.
educate.
advertise.

Explanation:

The blog's purpose is to help readers find and purchase the new album, which is a form of promoting or advertising the album to encourage sales. "Persuade" might imply changing opinions, "entertain" is for enjoyment, "educate" is for teaching, but "advertise" fits promoting a product (the album) for purchase.

Answer:

D. advertise.