The $(1)$ is customarily viewed as a body of general rules and practices that investigators follow in $(2).$ Because behavior is its subject matter, the field of behavior analysis focuses on the $(3)$ endeavors of scientists and practitioners as behavior.

$(1)$ scientific method

$(2)$ designing, conducting, and interpreting research

$(3)$ hourly

D

$(1)$ scientific method

$(2)$ designing and interpreting research

$(3)$ monthly

$(1)$ scientific method

$(2)$ designing and interpreting research

$(3)$ weekly

$(1)$ scientific method

$(2)$ designing, conducting, and interpreting research

$(3)$ daily