Which anatomical landmark is smooth, rounded, and located at the ends of bones?

The correct answer, condyle, refers to a smooth, rounded prominence at the end of a bone that acts as a joint surface where two bones articulate. Condyles are typically found at the distal ends of long bones, such as the femur or humerus, allowing for smooth movement in surrounding joints. Their rounded shape facilitates the gliding motion necessary during activities like walking and bending.

In contrast, epicondyles are bony protrusions located above the condyles and serve as attachment points for ligaments and tendons but do not articulate with other bones. Tuberosities are larger, roughened areas on bones meant for muscle attachment rather than joint movement. Crests are raised or prominent edges on a bone, serving similar purposes as tuberosities by providing surfaces for muscle attachment without directly related to joint surfaces. The specific characteristics of a condyle as a joint surface highlight why it is the correct anatomical landmark in this context.