The correct answer is option 1: Terrestrial planets.

Option 1: Terrestrial planets

Terrestrial planets are the four planets closest to the Sun in our solar system. These planets are Mercury, Venus, Earth, and Mars. They are called terrestrial planets because they have solid, rocky surfaces like Earth. These planets are also known as the inner planets because they are located closer to the Sun compared to the other planets.

Option 2: Giant planets

Giant planets, also known as Jovian planets, are the large gas giants in our solar system. Examples of giant planets include Jupiter and Saturn. These planets are made up mostly of gases and lack a solid surface.

Option 3: Dwarf planets

Dwarf planets are celestial bodies that are similar to planets but have not cleared their orbit of other debris. Examples of dwarf planets in our solar system include Pluto and Eris. These bodies are smaller in size compared to the traditional planets.

Option 4: Gas planets

Gas planets are another term for giant planets. These planets are composed primarily of hydrogen and helium gases. They lack a solid surface and have a thick atmosphere.

In conclusion, the correct answer is option 1: Terrestrial planets, as these are the four closest planets to the Sun and