Question

based on the information from the movie, what can you conclude about the most common chemical compound on earth? its oxygen. its hydrogen gas. its carbon dioxide. its water.

Explanation:

Oxygen is an element, not a compound. Hydrogen gas ($H_2$) and carbon - dioxide ($CO_2$) are common compounds, but water ($H_2O$) is the most abundant and common chemical compound on Earth, covering a large portion of the planet's surface and being essential for life.

Answer:

D. It's water.