Pretty sure it is A. Like a sample population
affects Integumentary System by making your body heat up making you sweat
dosent affect skeletal system
dose affect the muscular system by breaking muscle tisues.
dosent affect the nervous system
dosent affect Endocrine System
dose affect cardiovascular system by pumping blood faster getting musles oxygen and getting rid of carbon dioxide
dosent affect the urinary system as water in the system will leave though sweating.
affects the Respiratory System by causing it to breath faster to keep up with the amount of oxygen the body needed.
dose affect the lymphatic system by transporting fluids in the blood stream
extersising a few hours after eating will boost the digestive system eating to soon will result in regurgitation or affect how well you extersise
dose not affect the reproductive system
Engineering should be the answer because to create a great experiment, it has to be well put together.
During the course of initiating the scientific method, the hypothesis is considered the first major step. Before that would be identifying a subject and observing a particular issue, animal, etc.
