What processes contribute to adding moisture to the air?

The correct choice focuses on processes that increase the amount of water vapor present in the atmosphere. Evaporation is the primary process, where liquid water is converted into water vapor, thus adding moisture to the air. This can occur from various sources, such as oceans, lakes, rivers, and even moisture from the ground.

Sublimation, on the other hand, refers to the direct transition of water from a solid state (like snow or ice) into water vapor without becoming liquid first. This process also contributes to moisture in the air, especially in colder regions or during winter months when snow can sublimate directly into water vapor.

Together, these two processes are significant sources of atmospheric moisture, influencing weather patterns, humidity levels, and overall climate conditions. Understanding how evaporation and sublimation contribute to humidity is essential for interpreting weather phenomena and discussing atmospheric conditions.