When people are perceived as sharing physical characteristics such as skin color, this is known as aQuestion 10Answera.race.b.society.c.heritage.d.ethnicity.

The correct answer to the question is: a. race.

Explanation: Race refers to the classification of individuals based on shared physical characteristics, primarily skin color, facial features, and hair texture. This categorization has historically been used to group people into different categories, often with social and political implications. Conversely, ethnicity encompasses cultural factors such as nationality, culture, language, and shared history, rather than just physical traits. Society generally refers to a structured community of people, often with shared culture, while heritage pertains to the traditions, values, and history passed down through generations. Thus, when people are seen as sharing specific physical attributes, it is most accurately described as race.