Answer: B. Slower population growth
Explanation:
Slower population growth is Not a reason why communicable diseases like pneumonia kill fewer people today than they did in the past, this is because in present times irrespective of the population growth, newer approaches have been introduced to improve quality of life and hence reduce the risk of communicable diseases.
Approaches like; continuing medical advances, improved living conditions, better preventive treatment. Etc.
True because it can bring more stress from all the work your doing breaking down your body slowly
To add on to what the other person said that is the WHO (world health organizations) definition of health :)