Which condition will most likely result in the
formation of a cloud?
(1) wind speed decreasing
(2) air pressure increasing
(3) cool, moist air sinking
(4) warm, moist air rising

Warm, moist air rising at the atmosphere will form clouds. Warm air rises and cool air sinks, as the moist of the warm air will rise, it will cool and expand in the atmosphere resulting in the process of making clouds called condensation. it.

I'm pretty sure it's c. extremely gradual but not 100% sure though.

Answer the collision of tectonic plates;