This is heavily disputed, and honestly, it varies on a person-by-person basis. Some people are visual learners (so it's effective for them to use videos and pictures to help them study), some prefer being hands-on, etc...
Generally though, I'd say the most effective method that works for most people is through visceralisation. This is the process of associating concepts, words. phrases etc. with your different senses (sound, touch, images...). You can read up more on it by searching up "visceralisation for studying".
Answer:
Cognitive behavioral therapy
The five responsibilities are communicating to the patient who you are, what your job is, what procedure you will be doing, the time it will take for the results, and what they can do until the results.
The spinal cord send nerve impulses to and from the brain
I am not sure, but I think the answer is c.