Final answer:
Cancer, heart disease, and stroke are the three leading causes of death in the US.
Step-by-step explanation:
The leading causes of death in the United States include cancer, heart disease, and stroke. Cancer, a group of diseases characterized by abnormal cell growth, is a major cause of death in developed countries. Heart disease, primarily caused by factors like sedentary lifestyles and poor diets, is the number one killer of Americans. Stroke, which occurs when blood flow to the brain is disrupted, is also one of the leading causes of death in the US.