Migration can lead to which of the following effects?

Migration plays a significant role in the diffusion of ideas because it facilitates the movement of people across different geographic regions, bringing diverse cultural perspectives and practices into contact with one another. When individuals migrate, they carry their cultural beliefs, values, traditions, and knowledge with them, which can lead to a blending of cultures and the sharing of new ideas. This exchange can enhance creativity, innovation, and adaptability within societies, fostering a more dynamic cultural landscape.

In contrast, stagnation of culture, isolation of different communities, and a decrease in cultural exchange typically occur under circumstances where interaction and exchange between different cultural groups are limited. For example, if communities become isolated from one another due to geographical, political, or social barriers, the sharing of ideas and cultural practices may diminish, leading to a more static cultural environment. Therefore, the impact of migration is generally one of increased cultural connectivity and idea exchange, which aligns with the correct answer regarding the diffusion of ideas.