Explanations:
The coastal plains are low-lying areas that are adjacent to the sea. These regions are characterized by their proximity to the ocean, which provides a rich source of marine life and resources. The primary occupation of people living in these areas is often related to the sea, and fishing is one of the most common and significant economic activities. Fishing is a traditional occupation that has been practiced for centuries in coastal regions, providing a livelihood for many communities. The abundance of fish and other marine resources in the coastal waters makes fishing a viable and sustainable occupation for the local population.
The coastal plains are often fertile and can support agriculture, but the most prominent and widespread occupation is fishing. This is because the sea provides a consistent and renewable resource that can be harvested year-round. Fishing not only provides food for the local population but also supports a broader economy, including the processing, packaging, and distribution of fish products. Additionally, fishing can support related industries such as boat building, net making, and the sale of fishing equipment.
In contrast, desert safari activities are associated with arid and semi-arid regions, which are far removed from the coastal plains. These activities are more related to tourism and adventure sports rather than a primary occupation for the local population. Therefore, the common occupation of people living on the coastal plains is fishing, as it is directly linked to the natural resources available in these regions.