Answer:
A. dominant
Step-by-step explanation:
If 80 percent of people in a culture speak Spanish, it indicates that Spanish is the prevailing or dominant language in that culture. The term "dominant" refers to the language, culture, or group that holds the most power, influence, or prevalence within a particular society or community. In this case, since the majority of the population speaks Spanish, it suggests that Spanish has a strong presence and is widely used in various aspects of daily life, such as communication, education, business, and media.