Which movement involves bringing two bones together?

The movement that involves bringing two bones together is flexion. This action typically occurs at joints where the angle between the two connecting bones decreases, such as bending the elbow or knee. When flexion occurs, it effectively draws the bones closer together, reducing the angle of the joint.

In contrast, extension is the opposite motion, where two bones move apart, increasing the angle at the joint. Abduction refers to moving a limb away from the midline of the body, while adduction involves moving a limb towards the midline. Thus, flexion is specifically responsible for the action of bringing two bones together.