The best answer to how distance decay influences culture is:
A) When a culture is farther away from its hearth, it will begin creating new elements of culture.
Distance decay refers to the diminishing intensity of cultural, social, or economic relationships as the distance between two points increases. As cultures spread away from their origin (hearth), they often adapt and evolve, leading to the creation of new cultural elements due to varying influences from the environment, other cultures, and changes over time.