Why Does the Death Rate Due to Pneumonia Increase So

Multiple Choice

Why does the death rate due to pneumonia increase so sharply during late adulthood?

A) Pneumonia is much more deadly today than it was several decades ago.
B) More than 50 lung inflammations are classified as pneumonia,making it appear that the disease kills more people than it actually does.
C) As their immune system weakens over time,many elders eventually encounter an infection that they cannot fight.
D) Pneumonia vaccinations are rarely given to adults over age 65.