What occurs when warm, humid air is
pushed up the side of a high mountain?
A. As the air goes up the mountain, the air
will cool, the moisture will condense, and
clouds will form.
B. After the air is over the mountain, the air
will cool, the moisture will condense, and
clouds will form.
C. As the air goes up the mountain, the air
will warm up, causing higher relative
humidity and precipitation.
D. As the air goes up the mountain, the air
density will increase as it cools down,
causing clear, sunny weather.

it's a

Explanation: whenever the moisture goes up the mountain it decreases in density so it's able to become a cloud.

thinking it would be d not too sure but i think it's right

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.