Solution:Tropical evergreen forests grow in the regions near the Equator (10°N-10°S) and close to the tropics. These regions are hot and receive heavy rainfall throughout the year. As there is no particular dry season, the trees do not shed their leaves altogether.This is the reason they are called evergreen. Three major regions of evergreen forest in the world are- Amazon River Basin- Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela, French Guyana, Guyana, and Suriname.
Congo basin- Democratic Republic of Congo, Cameroon, Central African Republic, Gabon, Equatorial Guinea, Republic of Congo.
Borneo-Mekong-Southeast Asia basin- The region is composed of Two sub-region the Island of Borneo and the Mekong river. Therefore option (b) is correct.