Which temple style curves around the side of the head and mirrors its shape?

The correct choice is the skull temple. Skull temples are specifically designed to curve around the side of the head, closely following its natural shape. This design ensures that the eyewear sits comfortably and securely on the head, reducing the likelihood of slipping. Skull temples are often used in styles that require a more snug fit, making them ideal for active wearers or those who prefer a more stable fit for their eyewear.

In contrast, the library temple is typically characterized by its straight design, which doesn't follow the contours of the head as closely. Convertible temples can be designed to adapt and change styles but do not inherently curve around the head in the same way. Strap temples, often found on sports or safety eyewear, are more about providing additional security with a strap that goes around the back of the head, rather than curving along the sides. Thus, the skull temple stands out for its distinctive curved design that mirrors the shape of the head.