Which of the following is a primary use for skeletal muscle relaxants?

Skeletal muscle relaxants are primarily used to alleviate muscle spasms and spasticity by acting on the central nervous system. They suppress the areas of the brain that control muscle movement, which helps to reduce the involuntary contractions and tightness that can occur in various musculoskeletal disorders. This central action is pivotal for providing relief and allowing the patient to move more freely without discomfort.

While enhancing flexibility and range of motion is a consequence of the relaxed muscle state, it is not the direct primary purpose of these medications. Additionally, while there may be some peripheral effects on pain relief and circulation, these are not the primary uses of skeletal muscle relaxants. The focus is distinctly on their CNS effects to facilitate relaxation of muscle spasms.