From the fifteenth century onward, as Europeans came into increased contact with people from different regions of the world, they attempted to categorize these people based on their physical attributes. These categories (which did not previously exist) became the basis of systems that shaped and constrained the people’s daily lives. This is an example of:
a. aggregation.
b. eugenics.
c. racialization.
d. generalization.

c. racialization

Explanation:

Racialization is a sociological terms that describes the process or act of imbuing or ascribing ethnic or racial identities to a a group of people, racial elationship, or social practice that did not identify itself as such.

In other words, racialization often referred to as ethinicization, is a situation in which an individual or a person is giving a racial character to something or making it serve racist ends.

For example; Africans or African descent may often be stereotyped as uneducated, illiterate and poverty stricken.

Hence, in this case, the European categorization methods of people based on their physical appearance alone is considered as Racialization

the answer would be c