Questions: When layers of sediment are deposited by a moving current of wind or water graded beds are created stratification occurs they form cross-beds

The answer is the second one: stratification occurs.

Explanation for each option:

1. Graded beds are created: This is incorrect. Graded bedding occurs when sediment particles are sorted by size due to a decrease in current velocity, with coarser particles settling first followed by finer particles. This is a specific type of stratification but not the general process described in the question.

2. Stratification occurs: This is correct. Stratification refers to the layering that occurs when sediment is deposited over time. Layers of sediment are laid down in a sequence, creating distinct strata or layers.

3. Sediment is never deposited by a moving current: This is incorrect. Sediment is often transported and deposited by moving currents of wind or water. This is a fundamental process in the formation of sedimentary rocks.

4. They form cross-beds: This is incorrect. Cross-bedding is a specific type of stratification that occurs when sediment is deposited at an angle to the main bedding plane, often due to wind or water currents. While cross-beds are a form of stratification, not all stratification results in cross-beds.

Summary: When layers of sediment are deposited by a moving current of wind or water, stratification occurs. This process results in the formation of distinct layers or strata in sedimentary rocks.