A white, layer-like spread in the sky is a simple sign of which cloud?

Correct answer: Stratus cloud

Correct answer: A, stratus cloud. Stratus clouds form broad, fairly uniform layers or sheets that may cover much of the sky. Their appearance is usually smooth and spread out rather than tall and towering. A is correct because the word stratus is associated with a layer or blanket-like form. B, cumulonimbus, is a large vertically developed storm cloud that can produce heavy showers, thunder, lightning, or hail; it is not simply a thin white layer. C, hail, is frozen precipitation made of ice pieces that fall from clouds, not a cloud type. D, frost, is ice deposited on cold surfaces near the ground, not a layer of cloud in the sky. A helpful memory cue is “stratus = sheet or stripe-like layer”; do not confuse its flat spread with the vertical growth of cumulonimbus.