B - Alejandro wrote the song that Millie hoped to play in the talent show.
To have an active voice the subject should come before the verb (Alejando wrote and Millie hoped) the other options had the predicate before the verb and had the action happening to them.
The Yes Men focus their hoaxes on big corporations to gain the attention of the public as well as showing that they care for their customers.
I hope this is the answer you were looking for and that it helps!! :)
No it contains primarily personal opinions. I hope this helps