Which of the following are purposes of theoretical perspectives in abnormal psychology?
a. Understanding the DSM-5 diagnostic system.
b. Understanding the treatment of abnormality.
c. Understanding the causes of human behavior.

b. Understanding the treatment of abnormality.

c. Understanding the causes of human behavior.

Explanation:

Abnormal psychology is the study of abnormal thoughts, behaviors, or internal experiences in order to describe, predict, explain and treat these pattern of functioning.

So all of the theoretical perspective under abnormal psychology are set to help drive this definition above.

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.

answer; english speaking;