Which best describes the general air temperature on a cloudy night? less predictable than on a clear night lower than on a clear night higher than on a clear night the same as on a clear night?

Higher than on a clear night, because clouds can trap heat beneath them.

higher than on a clear night

Explanation:

On a cloudy night the temperature is higher as compared to that of the clear sky thus we tend to feel more humidity and warm air at night time and the clouds carry enough raindrop and thereby general air temperature on a cloudy night is higher as they block the air movement and create a blockage. And thereby creates an insulating layer.

Magma is outside the volcano  and lava is inside the volcano. 

Ithink the answer to that would be b):