How are the planets closest to the sun classified?

A. Gas giants
B. Terrestrial planets
C. Maximum planets
D. By their temperature

B. Terrestrial planets

The planets closest to the sun are classified as B. Terrestrial planets.

The planets closest to the sun are classified as B. Terrestrial planets. To arrive at this answer, you can use your knowledge of planetary classification or do a quick search to gather the necessary information.

Terrestrial planets are rocky and have a solid surface, similar to Earth. The four terrestrial planets closest to the sun are Mercury, Venus, Earth, and Mars. These planets are made up primarily of silicate rocks or metals, and they have relatively thin atmospheres compared to the gas giants found further away from the sun.

When given a multiple-choice question like this, it's a good idea to eliminate options that you know are incorrect. In this case, options A and D can be eliminated since gas giants refer to planets with a thick atmosphere composed mainly of hydrogen and helium, and classifying planets by temperature is not the standard method of categorization. Option C, "Maximum planets," doesn't make sense in this context, so the correct answer must be B. Terrestrial planets.