Scent sprayer is based on:
A. Charles’ law
B. Boyle’s law
C. Archimedes’ principle
D. Bernoulli’s theorem

Hint:When we press the cap of a scent sprayer, we apply pressure into the system. This pressure helps the water droplets in the scent sprayer to get sprayed from the cap of the sprayer which has an open pipe. We will define all the laws present in the question to find the answer to what the scent sprayer is based upon.

Complete answer:
The above four laws are explained as below:
Charles’ law: The Charles’ law states that the temperature and the volume of an ideal gas are inversely proportional to each other at constant pressure in the system.
Boyle’s law: It states that the pressure and the volume of an ideal gas are inversely proportional to each other at constant temperature in the system.
Archimedes’s principle: It states that upward buoyant force which is exerted on a body when immersed in a fluid is equal to the eight of the fluid displaced by the body.

Now, Scent sprayer is based on Bernoulli’s theorem because when air flows above an open pipe, its velocity head increases and decreases the hydraulic head. As the pressure decreases, the scent is pushed by the atmospheric pressure and thus because of this, the scent comes out with decrease in pressure. Thus scent sprayer is based upon Bernoulli's theorem.

Hence, option D is the correct answer.

Note: Apart from the Charles’ law and the Boyle’s law, there is also the Gay-Lussac’s law which shows the relationship of pressure and temperature. It states that the volume and the temperature are directly proportional to each other at constant pressure. All these equations combine to form the ideal gas equation.