Final Answer:
Talus is the earliest product in the weathering-erosion-sedimentation cycle. Option A is the answer.
Step-by-step explanation:
Talus refers to the accumulation of rock debris at the base of a slope, typically found in mountainous or hilly regions. In the weathering-erosion-sedimentation cycle, the process begins with weathering, where rocks break down into smaller fragments. These fragments, or talus, result from physical or chemical weathering processes such as freeze-thaw cycles or the expansion and contraction of minerals.
Options b) Delta, c) Varves, and d) Ooze are not the earliest products in the cycle. Deltas are formed at the mouths of rivers, varves are annual layers of sediment in glacial lakes, and ooze is a deposit typically found on the ocean floor, none of which directly represent the initial product of weathering.
Option A is the answer.