Final answer:
If most people exhibited a healthy lifestyle, average life expectancy would increase.
Step-by-step explanation:
If most people exhibited a healthy lifestyle, average life expectancy would increase. A healthy lifestyle that includes proper diet, regular exercise, avoiding risky behaviors like smoking, and seeking appropriate healthcare can significantly impact life expectancy. For example, studies have shown that individuals who maintain a healthy weight, exercise regularly, and refrain from smoking tend to live longer and have a lower risk of developing chronic conditions such as heart disease, cancer, and diabetes.
Improvements in healthcare and medical advancements have also contributed to increased life expectancy in recent centuries. However, it is important to note that individual factors and genetic predispositions can also influence life expectancy, and not all aspects of it can be solely attributed to lifestyle choices.