The correct statement is:
Physician assistants require a lower degree because they act under the close supervision of a doctor.
To clarify further, physician assistants (PAs) typically complete a master's degree in physician assistant studies after obtaining a bachelor's degree. Doctors, on the other hand, complete a bachelor's degree followed by medical school, which leads to a medical degree (MD or DO), and then they complete residency training, making the total educational requirements longer. While PAs can perform many tasks independently, they do operate under the supervision of a physician.