What best explains why most people in Japan live in coastal areas? A. The rest of the country is mountainous. B. Most Japanese spent their free time sailing. C. Most Japanese work in the fishing industry. D. The rest of the country is desert.

A. The rest of the country is mountainous.

Explanation:

Japan being an Island and mountainous region, did not have many flat regions. The scarcity of land has forced people in Japan to live near the coastal areas. Three fourth of the national land is mountainous, which is not good for farming. Japanese relied on the sea for many aspects of daily life staring with fishing, trading (import of resources and food).

So that way that some cases can be kept organized.

Explanation: also so that way cases that are brought up again can be used.