The answer is The Rule of Reason
For Example, a Manufacture company May restrict the supply of a product in different geographic market only to existing Retailers so they can earn a higher profit which lead to them creating a better service to customers.
This policy can increase the demand of the Manufacturer's product
Its option B
Explanation:
Because European countries were more developed than Asia and Africa
Obtain resources and markets
Imperialism followed industrialization so countries could obtain resources for industry and have a guaranteed market for their products.
As countries found need for natural resources, they needed to find cheap way to obtain these resources. The cheaper the resources, the more money the country could make which ultimately gave them more world power. To stay competitive in the market, imperialism allowed for cheap or free resources at the consequence of taking over other areas.
There are tons of antonyms for credible out there, but really good ones include deceptive, dishonest, undependable, unreasonable, etc...
Hope this helped!!!!!