Paulo, age 62, has developed heart disease from a lifetime of smoking cigarettes. his heart disease is an example of primary aging compressed morbidity normal senescence secondary aging

The given blank can be filled secondary aging.

Explanation:

Primary aging refers to the slow and somewhat inevitable procedure of deterioration of the body that occurs throughout the life, that is, the gathering of biochemical destruction, which results in fading vision, slowed movements, reduced tendency to amend with stress, impaired hearing, and others.  

While the processes of secondary aging take place due to poor health practices, and diseases associated with smoking, lack of exercise, accumulation of fats, and others. These things are generally preventable, whether with the help of modern medicine or doing certain lifestyle changes. Thus, the mentioned case is an illustration of secondary aging.  

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

it’s lava came from an explosive eruption