The term used to describe the speed and intensity with which a pathogen is likely to cause and infection is

Virulence

Explanation:

Virulence can be define as the ability of the microorganism or pathogen to infect and damage the host organism. It is the speed and intensity with which the pathogen infects the host. It can also be called as pathogenicity of the infecting organism. A virulent organism can be a bacteria, virus, protozoa or fungi. These organism can cause minor to severe infections.

answer; i believe the correct answer is (anemia);

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.