The planet that appears reddish in colour is?

Mars appears to be a reddish, when observed in the night sky.
Mars is called the "Red Planet." Since it appears in the sky as an orange-red star, Mars is frequently referred to as the "Red Planet." The ancient Greeks and Romans gave it the name of their god of war because of its colour. We now know that the planet's appearance is caused by rust in the Martian rocks. Its soil has iron minerals in it that cause rust, which makes the soil and its atmosphere red. Mars has two moons, Deimos and Phobos.
Hence, the correct option is "Mars".