Please HELP ASAP!
Which situation would most likely result in a thunderstorm?
A
A warm air mass collides with a cool air mass.

B
A warm air mass collides with a warm air mass.

C
A warm air mass rapidly increases in altitude.

D
A warm air mass rapidly decreases in altitude.

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?