Answer:
d. Mars
Step-by-step explanation:
Mars is a red colored inner planet. It is fourth planet of the solar system. It is smaller than Earth in size but similar to it. It has a rocky surface and two moons orbiting around it. The surface of Mars has presence of Iron oxide due to which it appears red in color. Wind blows continuously on Martian surface. It has two polar ice caps. Thus, the Viking landers sent back pictures of Mars.