Explanation:
Evaporation is the process by which a liquid changes into a gas. It occurs when the particles in a liquid gain enough energy to break free from the liquid's surface and become a gas. Several factors can influence the rate of evaporation, including temperature, humidity, surface area, and air movement.

Factors affecting evaporation:
1. Temperature: The most significant factor that affects the rate of evaporation is temperature. When the temperature increases, the particles in the liquid gain more energy and move faster. This increased energy allows more particles to break free from the liquid's surface and evaporate into the air.

2. Humidity: Humidity refers to the amount of moisture present in the air. When the air is already saturated with moisture (high humidity), it becomes more difficult for water to evaporate because there is less room for the water vapor in the air. Therefore, an increase in humidity will decrease the rate of evaporation.

3. Surface area: The larger the surface area of a liquid exposed to the air, the faster the rate of evaporation. This is because more particles at the surface of the liquid have the opportunity to gain enough energy to evaporate. Conversely, if the surface area is reduced, such as by decreasing the size of a container, the rate of evaporation will decrease.

Effect of Temperature on evaporation:
- As the temperature increases, the particles in the liquid gain more energy and move faster.
- This increased energy allows more particles to break free from the liquid's surface and evaporate into the air.
- Therefore, an increase in temperature will increase the rate of evaporation.

Conclusion:
Among the given options, an increase in temperature (option D) will increase the rate of evaporation. This is because higher temperatures provide more energy to the particles in the liquid, allowing them to escape into the air more easily. The other options, such as an increase in humidity (option A), decrease in temperature (option B), and decrease in surface area of water (option C), will all decrease the rate of evaporation.