Which of the following sentences is descriptive?

a. First, we made sure she was blindfolded. Then, we led her into the room.

b. The human papillomavirus, more popularly known as HPV, is an infection of the cervix.

c. The process only involves three steps, the first of which is to procure all the materials needed.

d. She turned heads wherever she went, as she had red hair, blue eyes, and porcelain skin.​