*Correct option (d) Bernoulli' theorem**
Explanation :
A scent sprayer is an example of fall in pressure due to increase in velocity. Also as per Bernoulli' theorem as we move along a streamline, the sum of the pressure (P), the kinetic energy per unit volume (ρv2/2) and the potential energy per unit volume (ρqy) ** a constant.
Therefore scent sprayer is based on Bernoulli'* theorem.
