when air gets warmer\na it goes upward\nb molecules move faster\nc molecules spread apart\nd all of the above

when air gets warmer\na it goes upward\nb molecules move faster\nc molecules spread apart\nd all of the above
Answer
Brief Explanations:
When air warms, its molecules gain kinetic energy. This causes them to move faster, spread apart, and as a result, the less - dense warm air rises.
Answer:
d. All of the above