Which of the following options is the correct sequence of layers of atmosphere…

CONCEPT

Atmospheric layers are defined mainly by how temperature changes with altitude. Starting at Earth's surface, these named layers follow a fixed vertical order, and each boundary marks a reversal or major change in the temperature trend.

APPLICATION

1. Troposphere: It begins at the surface and extends to roughly 8–18 km; most weather occurs here, and temperature generally decreases with height.

2. Stratosphere: It lies above the troposphere, extends to about 50 km, contains the ozone layer, and temperature generally increases with height.

3. Mesosphere: It extends from roughly 50 km to 85 km, and temperature again decreases with height.

4. Thermosphere: It begins above the mesopause; absorption of high-energy solar radiation makes temperature rise strongly with height.

5. Exosphere: It is the extremely thin outermost region, where the atmosphere gradually merges into space.

CROSS-CHECK / CONTRAST

Checking the adjacent layers rules out the near-miss sequences:

• Troposphere → Mesosphere → Stratosphere → Thermosphere → Exosphere places the mesosphere below the stratosphere, reversing those adjacent layers.

• Troposphere → Mesosphere → Thermosphere → Stratosphere → Exosphere places both the mesosphere and thermosphere below the stratosphere.

• More than one of the above does not apply because only one listed sequence preserves every adjacent layer boundary.

• None of the above does not apply because the complete standard sequence is present among the choices.

RESULT

Therefore, the surface-to-space order is Troposphere → Stratosphere → Mesosphere → Thermosphere → Exosphere.