AP EAPCET 08-Jul-2022 Shift 1 Paper

Brownian movement is the random motion of a particle as a result of the collisions with dispersion medium on colloidal particles. Thus, any factor that effects the movement of particles in a fluid impacts the rate of brownian motion e.g. increased temperature, increased number of particles, small particle size and low viscosity increases the rate of brownian movement.
Therefore, option (b) is correct.