Coastal areas are regions that lie along the coastlines of oceans and seas. The people living in these areas have a unique cuisine that is influenced by the availability of seafood and other local ingredients.

The correct answer is option C, which states that people living in coastal areas eat rice and fish. Here are some reasons why this is the case:

Availability of fish
- Coastal areas are rich in fish and other seafood due to their proximity to the sea. Fish is a staple food in many coastal communities and is readily available for consumption.

Cultural and traditional reasons
- Many coastal communities have a long-standing tradition of fishing, and fish has been a part of their diet for generations. This has resulted in the development of unique fish-based dishes that are specific to each region.

Climate and geography
- Coastal areas have a warm and humid climate that is conducive to rice cultivation. Rice is a staple food in many Asian countries, including those with coastal regions.

Nutritional value
- Rice and fish are both highly nutritious foods that provide the body with essential vitamins, minerals, and nutrients. Rice is a good source of carbohydrates, while fish is rich in protein, omega-3 fatty acids, and other nutrients.

Conclusion
In conclusion, people living in coastal areas typically eat rice and fish due to the abundance of seafood, cultural and traditional reasons, climate and geography, and nutritional value. This cuisine is unique and reflects the local culture and traditions of each coastal community.