Appropriation is best described as the process by which
a. two different cultures trade customs
b. one aspect of a culture is spread to another group
c. two similar cultures merge and adopt common customs
d. one culture adopts features from a nearby culture for its own benefit

The cultural appropriation is a one-sided process, which means that it affects one culture more than the other and often it does not involve the other culture all all.

It's also done for the benefit of the culture that adopts the new aspects.

The correct answer is:
d. one culture adopts features from a nearby culture for its own benefit