Explanation:

- Correct Answer: Option 4 – Venus

- Venus is the hottest planet in our solar system.

- Its dense atmosphere traps heat in a runaway greenhouse effect.

- Surface temperatures can reach up to 900 degrees Fahrenheit (475 degrees Celsius).

- Option 1: Mercury

- Despite being closest to the sun, Mercury lacks an atmosphere to retain heat.

- Temperature varies significantly, with daytime highs around 800 degrees Fahrenheit (427 degrees Celsius) but plummets at night.

- Option 2: Earth

- Earth has a balanced climate suitable for life.

- Average surface temperature is about 59 degrees Fahrenheit (15 degrees Celsius).

- Option 3: Mars

- Mars is cold, with average temperatures around minus 80 degrees Fahrenheit (minus 60 degrees Celsius).

- Thin atmosphere leads to less heat retention.