Answer:
The correct option is : b. the use of reinforcement and punishment
Step-by-step explanation:
According to Sigmund Freud, an Austrian neurologist, an unconscious mind is the central location where all the feeling and thoughts are stored, outside of the conscious awareness.
The unconscious mind can be accessed by dream analysis, slips of tongue and examining first words that comes into one's mind.
Therefore, the unconscious mind can not be accessed by reinforcement and punishment.