What would a psychologist who specializes in psychometrics most likely be concerned with

A)  counselling 
B)  animal experimentation 
C)  relationship between brain chemistry and behaviour 
D)  developing intelligence tests

Psychometrics

Psychometrics is the field of study concerned with the theory and technique of psychological measurement, including the development of tests and questionnaires.

Intelligence Tests

Standardized assessments created to evaluate an individual's cognitive capacity and potential.

Counselling

The professional guidance provided by a therapist or counselor to help individuals cope with personal, social, or psychological challenges.