Various impairments of the mind are commonly associated with old age. To what extent are these biological in origin? To what extent, social in origin?

When you begin getting old, matters inside your frame begins off revolved shutting down, like memory, resistance to sickness, etc. The bulk changed into born with all of this stuff running very well. We felt top and lifestyles changed into a pleasure. But while you attain 70' matters begin to end running and could retain to accomplish that until you die. Some human beings stay longer than others and their frame appears to keep collectively loads better. But we can all die one day.

c is the correct answer hope this !

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.