Which two bones form the sides and top of the cranium?

The parietal bones are indeed the correct choice as they form the sides and the top of the cranium. Each parietal bone is located on either side of the skull, contributing significantly to the overall structure and shape of the cranium. These bones articulate with the frontal bone at the front of the skull and the occipital bone at the back. They also connect to the temporal bones, which are located lower and lateral on the skull.

Understanding the anatomy of the skull is essential in cosmetology, as it helps in recognizing facial shapes and features when cutting hair or performing aesthetic procedures. The parietal bones provide important landmarks for professionals when considering the structure of a client's head for styling purposes.