Question 1201Navigation General

The correct answer is C) are rain clouds. The prefix "nimbo" in a cloud's name indicates that the cloud is associated with precipitation, such as rain or snow. Nimbostratus and nimboculumulus are examples of cloud types with the "nimbo" prefix, and these are low-altitude, sheet-like clouds that produce precipitation. The other answer choices are incorrect because: A) "nimbo" clouds are not middle or high altitude, B) they are not just sheet or layer clouds, and D) the "nimbo" prefix does not indicate great vertical development, but rather the presence of precipitation.