Which of the Following Is an Example of a Psychologist

Which of the following is an example of a psychologist who is studying the brain?

A) Dr.Fields, who studies the purchasing habits of impulsive individuals
B) Dr.Joe, who studies how neural activity changes as newborn babies develop
C) Dr.Perez, who studies how our feelings can influence our thought processes
D) Dr.Ladd, who studies the training activities of professional athletes