What's the verb in this sentence, the girls decided to walk on the beach

Is anyone in 6th grade here because i only see high school stuff

The process of? involves students offering each other constructive feedback to improve their written drafts.

Which sentence is punctuated correctly? a) the moon which often shines too brightly in my window is full tonight. b) my new textbook which costs over thirty dollars is the best one i've ever read. c) mr. smith, who is a well-respected lawyer, has just retired from active practice. d) the play by velma winterbaker, that was published last year, ended up winning the pulitzer prize. '