Which bones are located in the arm?

The radius and ulna are the two primary bones located in the forearm, which is part of the arm. The radius is situated on the lateral side of the forearm when the palms are facing forward, while the ulna is found on the medial side. These bones play essential roles in the movement of the arm and the wrist, allowing for a wide range of motion and providing stability during various functions, such as grasping and lifting.

The other choices list bones that belong to different parts of the body. The femur and tibia are leg bones, specifically in the upper and lower leg, respectively. The clavicle and scapula are both associated with the shoulder area, playing a role in connecting the arm to the torso. The humerus is indeed part of the arm, residing in the upper arm, but the fibula is another leg bone located in the lower leg alongside the tibia. Thus, the correct focus on the radius and ulna, as the bones of the arm, helps clarify their specific role in upper limb anatomy.