Find the odd number / letters / word from the given alternative:

The odd one out is D, raisin. The other three are types of precipitation, while a raisin is a dried grape.

• Rain is a form of precipitation that occurs when water vapor in the atmosphere condenses and falls to the ground.
• Showers are brief periods of rain that typically last for a few minutes.
• Sleet is a type of precipitation that occurs when raindrops freeze as they fall through the air.
• Raisins are dried grapes that are typically used in baking or as a snack.