The psychological perspective that describes behavior in terms of what best suits an organism for successful reproduction and survival is

Evolutionary

Explanation:

Evolutionary psychology is a branch of psychology which supports Darwin’s theory of evolution and wires the connection between science of psychology and the study of biology. According to the evolutionary psychologist human behavior is based on the influence of both psychological and physical tendencies which helped human antecedents reproduce and survive.  

i think the answer is strength

answerkingdom is the largest cateagory