The Nurse Clarifies That the Immune System Failure Theory States

The nurse clarifies that the immune system failure theory states that:

A) older adults lose their ability to effectively respond to infections and are more likely to die from them.
B) the body no longer recognizes itself and begins to attack itself, causing illness.
C) toxins and harmful chemicals (free radicals) in the environment cause damage to body cells.
D) the diminished activity of older adults make them susceptible to illness.