Which of the following is an appropriate way to mist plants?

Using distilled water is considered an appropriate way to mist plants because it lacks impurities and minerals that can be present in tap water. These impurities and minerals can potentially harm plants by creating a buildup on the leaves or affecting their health over time. Distilled water, being free of these contaminants, provides a safe and beneficial option for misting, allowing plants to receive hydration without the risk of negative side effects.

Rainwater is often a good choice as well due to its natural composition, but distilled water specifically ensures a level of cleanliness that can be particularly beneficial in controlled growing environments. While boiling water may seem like a way to kill harmful bacteria, it is inappropriate for misting because it can cause stress or damage to the plants, and tap water may introduce undesired chemicals or chlorine to the plants.