The correct answer is weathering. Weathering is the process that breaks down rocks into tiny pieces through various mechanisms such as temperature changes, wind, water, and chemical reactions. Erosion and deposition refer to the transportation and deposition of these weathered rock particles. Magnification refers to the act of enlarging something, such as an image, while it is not directly related to the breakdown of rocks into tiny pieces.
The process that breaks down rocks into tiny pieces is called weathering.
