Final answer:
The thunder in the skies during a thunderstorm is produced by the violent upward movement of air and water particles.
Step-by-step explanation:
The thunder in the skies during a thunderstorm is produced by the violent upward movement of air and water particles. When lightning occurs, it rapidly heats the surrounding air, causing it to expand explosively. This rapid expansion creates shock waves that traveling through the air, which we perceive as thunder. Therefore, the correct answer is c. 1 and 3.