Which term includes the other three?

a. commensalism
b. mutualism
c. symbiosis
d. parasitism

The term that includes the other three is : c. Symbiosis

Symbiosis mutualism : if the symbiosis is benefited for both organisms that are involved
Symbiosis parasitism : if the symbiosis negatively affect one organism and positively affect the other
Symbiosis commensalism : if one organism is neither benefited or negatively affected and the other benefited

Hope this helps

If you get a map and put the countries a states all together it forms all one piece you can also tell because of the earth quakes