Sheet-like clouds that make a large layer covering the sky are called

Sheet-like clouds that make a large layer covering the sky are called Stratus Clouds

Explanation:

Stratus clouds are the type of clouds that form in the sky is a type of layer covering it, they can form patterns also and have a fairly homogeneous gray to white color. They can last a large amount of time and form on the surface in a type of mist or fog. They are called stratus because the meaning of the word is Layer.

the correct answer is b