Maslow found that self-actualizing people have the following characteristics:
a. a capacity to tolerate and even welcome uncertainty in their lives.
b. spontaneity and creativity.
c. a need for privacy and solitude.
d. all of these.

d. all of these.

Explanation:

Self-actualization is defined by Maslow as the growth of an individual to fullfill their highest needs, it's when their personal potential is achieved and it happens after their basic needs have been fulfilled.

Some charachteristics of self-actualization are:

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answer; i believe the correct answer is prefrontal cortex;

i think it is the third one.