What are stratiform clouds characterized by?

Stratiform clouds are characterized by a uniform base formed in sheet-like layers. This structure is indicative of stratiform clouds, which often spread out across large areas and can cover the sky like a blanket. They are typically low-level clouds that form when air rises gently and spreads horizontally, resulting in a smooth and even cloud deck.

The sheet-like formation leads to widespread cloud cover, which can result in steady, continuous precipitation, though it usually occurs at lower intensities compared to more convective cloud types. This layered appearance is a defining trait of stratiform clouds, distinguishing them from other cloud types that may have more chaotic or disorganized structures.

In contrast, the features described in the other options do not accurately represent stratiform clouds. Layered structures with a chaotic base do not align with the smooth and uniform characteristics of stratiform clouds. Clear separation between different cloud types suggests a mix of clouds that are not typical for stratiform clouds, and high altitude presence with minimal precipitation would better describe types like cirrus clouds rather than the low, continuous precipitation often associated with stratiform clouds.