Which type of igneous rock is made from cooled and crystallized lava?

My answer is Intrusive rocks.

Explanation: Intrusive rocks are rocks that cooled inside the volcano.

b is the best answer for this question.

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a