Which best describes the movement of a fluid during convection?

A. Warm & cool fluids rise

B. Warm & fluids sink

C. Warm fluid rises & cool fluid sinks

D. Warm fluid sinks & cool fluid rises

During convection, Warm fluid rises & cool fluid sinks (C).

Answer is C - warm fluid rises and cool fluid sinks.

Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Convection process takes place through advection or diffusion.