What is the most logical next event?

We see the vacuum attachment product and see the product in action. The lady shows each side, and we see her attach the product. We see the lady mopping. then we

Choices: (a). see the lady cover a back of her cupboard with a white paper and vacuum a crack. (b). see a lady as she vacuums. (c). see the cleaner and the vacuum attachment. (d). see the ease of using the attachment.
(d).