According to Bhavaprakasha, Vasanta ritu (spring season) is a time of rejuvenation, where the body requires light and easily digestible foods. During this season, fish from rivers are considered ideal for consumption. This is because river water is believed to be pure and fresh, which aligns with the qualities needed for optimal health during this time of year.
- Wells generally contain stagnant water, which is not ideal during Vasanta ritu.
- Lakes may have still or less purified water, which is not as beneficial as fresh river water.
- Waterfalls are associated with fast
-moving water, but fish from these sources are not recommended in Bhavaprakasha for Vasanta ritu.
Thus, the correct answer is (3) River.