Final answer:
The largest particles from the breakdown of rock amongst the options of clay, silt, sand, and gravel are gravel particles, which are formed due to the weathering and erosion of rocks.
Step-by-step explanation:
The largest particles formed from the breakdown of rock are classified based on size, ranging from very fine particles like clay to larger aggregates such as gravel. In the context of the choices provided, which are clay, silt, sand, and gravel, gravel is comprised of the largest particles that result from the physical and chemical weathering of rocks. Particles that make up gravel can vary in size but are larger than the sand, silt, and clay particles. Clastic sedimentary rocks, which include gravel, are formed by the accumulation of rock fragments that have been transported through water or air and eventually settle in lower areas.
The largest particles formed from the breakdown of rock are d) Sand. Sand is composed of sand-sized minerals, rock fragments, or organic material. It is typically made up of quartz, which is the most stable and resistant to erosion. Sand is formed through the process of physical and chemical weathering, where pre-existing rock is broken down into smaller particles and then deposited in lower areas.