Explanation:

Here's an explanation for each statement:

- Statement I: Without the atmosphere, temperature would be well below freezing point everywhere on the Earth's surface.

- This is correct. The atmosphere acts as a blanket, moderating Earth's temperature, and without it, surface temperatures would indeed be much colder.

- Statement II: Heat absorbed and trapped by the atmosphere maintains our planet's average temperature.

- This is correct. The greenhouse effect, where gases trap heat, helps maintain Earth's livable temperature.

- Statement III: Atmosphere's gases, like carbon dioxide, are particularly good at absorbing and trapping radiation.

- This is correct. Greenhouse gases, including carbon dioxide, are effective at trapping heat and maintaining a stable climate.

- Option 1: I and III only

- Incorrect, as Statement II is also correct.

- Option 2: I and II only

- Incorrect, as Statement III is also correct.

- Option 3: I, II and III

- Correct Answer: All statements are accurate.

- Option 4: II and III only

- Incorrect, because Statement I is also correct.