B) Frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor to ice as the water vapor reaches the freezing point.
Chloroplasts are organelles specialized for photosynthesis. Animals do not photosynthesize; therefore, they do not need chloroplasts.
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