Why does a multinational corporation have so much power?
a. it operates solely within one country.
b. it produces multiple products for people.
c. it influences markets around the world through its production and sales capabilities.
d. no laws regulate a multinational corporation and it is free to do as it wants.

The correct answer is: 

C. It influences markets around the world through its production and sales capabilities. 

Option A must be wrong: a multinational corporation per definition operates in multiple countries. 

Option B is also false: it can for example produce only one product. 
D is also false: there are laws regulating it!