After being introduced in the 1930’s the fire ant became established throughout much of the southern United States. One biological way to control fire ants might be to introduce organisms that are
A mutualistic to fire ants
B None of the above
C produce food for fire ants
D parasitic to fire ants

Well, you don't want the ant to have producers of food right in front of it cause then he will just eat the food producer and nothing much will happen. A mutualistic thing is parasitistic.

Explanation:

velocity and height

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.