"what psychological perspective assumes that our current behavior exists because it provided survival and reproductive advantages to our ancestors? "

evolutionary psychology

Explanation:

evolutionary psychology is study of psychology believe that human mind work collected on basis of mechanism that control and guide our behavior and it mainly depend on ancestors behaviors that transfer through biological genes and its also known as heritage traits . simple it is study believe that current human behavior like how to choose and secure life partner , acquire language an so on . To sum up current human behavior is adaptation mean copy and learn from ancestor solution and problems.