Identify the false statement about the troposphere.

The correct option (the false statement about the troposphere) is: It is positioned higher than the stratosphere.

Atmospheric Layer Structure:
Earth's atmosphere is organized into distinct layers starting from the planet's surface and extending outward into space. The order of these layers from lowest altitude to highest altitude is:
1. Troposphere (innermost/lowest layer)
2. Stratosphere
3. Mesosphere
4. Thermosphere
5. Exosphere

Analysis of Options:
• "Its typical vertical extent is close to 13 km." — True. The troposphere extends from the ground to an average height of about 13 km (ranging from around 8 km at the poles to 18 km at the equator).
• "Most weather events, including rain and fog, take place here." — True. The troposphere holds approximately 75% to 80% of the atmosphere's mass and almost all water vapor, making it the zone where virtually all weather occurs.
• "It is positioned higher than the stratosphere." — False. The troposphere is the bottom-most layer, which means it is positioned below (lower than) the stratosphere, not higher.
• "It forms the atmosphere’s lowest major layer." — True. It touches Earth's surface and lies directly under the stratosphere.

Because the troposphere is located below the stratosphere, the statement claiming it is positioned higher than the stratosphere is incorrect, making it the correct choice to identify.