On which thickly clouded planet has radar mapping revealed a varied topography consisting of plains, highlands, and thousands of volcanic structures?

a. venus

b. jupiter

c. mercury

d. neptune

A. Venus  

Venus is a planet which is little smaller than earth. Venus is a rocky planet with a volcanic landscape. It exhibit a thick, toxic and reducing atmosphere due to the abundance of gases like carbon dioxide, nitrogen and clouds of sulfuric acid and water droplets present in it.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.