The average kinetic energy of water particles is directly related to the temperature of the water. The higher the temperature, the greater the average kinetic energy of the particles.
From the table provided:
- Sample 1: 15 ºC
- Sample 2: 8 ºC
- Sample 3: 22 ºC
- Sample 4: 4 ºC
Sample 3 has the highest temperature at 22 ºC, which means it has the greatest average kinetic energy.
Therefore, the correct response is 3.