What geographical feature determines time zones?

The correct answer is determined by longitude because time zones are based on the Earth's rotation relative to the position of the sun. As the Earth rotates, different longitudinal sections of the planet experience daylight and darkness at different times. The division of the Earth into 24 time zones corresponds to the 360 degrees of longitude, with each time zone typically representing a difference of one hour for every 15 degrees of longitude.

Longitude lines run from the North Pole to the South Pole and are used to measure distances east and west of the Prime Meridian, which is zero degrees longitude. As you move east or west from the Prime Meridian, the time changes by one hour for approximately every 15 degrees. This system allows for a standardized way of organizing time around the globe based on the Earth's rotational position in relation to the sun.

In contrast, latitude, which measures distances north and south of the equator, does not influence the division of time zones. Altitude refers to elevation above sea level and does not play a role in timekeeping. Climate pertains to weather patterns and environmental conditions and does not impact how time zones are structured.