Which of the following professionals cannot prescribe medication in Illinois?

In Illinois, the authority to prescribe medication is limited to certain licensed healthcare professionals. Physical therapists are not authorized to prescribe medications; their scope of practice focuses on rehabilitation, therapy, and managing physical function without the ability to write prescriptions.

Psychologists, while they hold advanced degrees and can provide therapy and psychological assessments, typically do not have the authority to prescribe medications unless additionally licensed as a medical doctor or psychiatrist. Their practice generally does not include medication management.

Nurse practitioners, on the other hand, do have the authority to prescribe medications, including controlled substances, when they meet specific criteria and operate under a supervisory or collaborative agreement with a physician.

Given these distinctions, the conclusion that all the professionals mentioned cannot prescribe medication in Illinois is correct since physical therapists and psychologists lack that authority. Thus, the correct response identifies that none of the professionals listed can prescribe medications.