Question

where does water boil the fastest? (1 point)
on a boat in the ocean
on top of a mountain
on top of a skyscraper building
on top of a hill

Explanation:

The boiling point of water depends on atmospheric pressure. Lower atmospheric pressure (at higher altitudes) lowers the boiling point, meaning water boils faster. Among the options, "on top of a mountain" is at the highest altitude (thus lowest atmospheric pressure) compared to the others (ocean boat: sea level pressure; skyscraper/building: lower altitude than a mountain; hill: lower altitude than a mountain). So water boils fastest on top of a mountain.

Answer:

on top of a mountain