I think it's b. I took the test and a. was wrong
The smaller, inner planets include Mercury, Venus, Earth, and Mars. The inner planets are rocky and have diameters of less than 13,000 kilometers. The outer planets include Jupiter, Saturn, Uranus, and Neptune. The outer planets are called gas giants and have a diameter of greater than 48,000 kilometers.
You can use this app called quillit
The Meiji Restoration led to Technological Modernization of Japan.