Which statement best describes inductive reasoning?
it uses previously proven or accepted properties to reach a conclusion.
it uses observation of patterns and past events to reach a conclusion.
it uses any convenient method to reach a conclusion.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

its d. you give me brainliest