Doctors do not administer vaccinations to people who are too sick. Which best explains why?

The weakened or dead form of the pathogen may be attacked by ther person's immune system.
The weakened or dead form of the pathogen may have a fatal effect when it is combined with medication that the sick people are taking.
The digestive systems of sick people may be negatively affected by the weakened or dead pathogen.
The white blood cells of sick people may not be able to efficiently handle the weakened or dead form of the pathogen.

D, The white blood cells of sick people may not be able to efficiently handle the weakened or dead form of the pathogen.

Explanation:

Vaccinations are essentially just weak diseases we use to create antibodies so the body can protect itself from the full disease. If it sees it once, it can defend itself, is the theory. This is choice D.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

there’s no image attached but i can if you want: )