Answer:
B. Focuses on how people take in and store information
Explanation:
By elimination:
Option (a) describes learning theories of personality like Classical (Pavlovian) conditioning and Social learning (Bandura).
Option (c) describes Psychoanalytic/Psychodynamic personality theories.
Option (d) seems to describe a Person-Centered approach to describing personality (e.g. Rogers) due to the phrase "capacity to choose how to think and act".
Only option (b) describes a purely cognitive approach to theorizing personality.