Bernoulli’s theorem is based on

Bernoulli’s theorem is based on energy conservation; option [B]. It states that in a flowing fluid, the total mechanical energy per unit mass remains constant along a streamline. This principle describes the relationship between fluid velocity, pressure, and elevation and is fundamental in fluid dynamics, aerodynamics, and hydrodynamics. Bernoulli’s theorem helps analyze fluid flow in various engineering applications, including aircraft design, pipe flow, and hydraulic systems. It is derived from the conservation of energy principle, where the total energy of a system remains constant unless acted upon by external forces. Therefore, the correct option is [B] Energy conservation, elucidating the foundational principle upon which Bernoulli’s theorem is based.