Fishing provides a livelihood to a significant number of people in:

Coastal districts
Villages along rivers
Communities around lakes and reservoirs
All of the above

The correct answer is: d) All of the above

Fishing provides a livelihood to a significant number of people in coastal districts, villages along rivers, and communities around lakes and reservoirs. In fact, according to the Food and Agriculture Organization of the United Nations, over 500 million people worldwide depend on fisheries and aquaculture for their livelihoods.

Coastal districts are home to a large number of fishing communities. These communities are often located in remote areas with limited economic opportunities. Fishing provides a way for people in these communities to earn a living and support their families.

Villages along rivers are also important fishing areas. Rivers provide a source of food and income for many people living in these villages. Fishing is often a way of life for people in these communities, and it is passed down from generation to generation.

Communities around lakes and reservoirs are also important fishing areas. Lakes and reservoirs provide a habitat for a variety of fish species, which are important for both subsistence and commercial fishing. Fishing is a way of life for many people living in these communities, and it is an important part of their culture.

In conclusion, fishing provides a livelihood to a significant number of people in coastal districts, villages along rivers, and communities around lakes and reservoirs. It is an important source of food and income for many people around the world.