Explanation
The forest that has conifers as the dominant vegetation is:
C: Boreal forests.
Boreal forests, also known as taiga forests, are characterized by coniferous trees as the dominant vegetation. Conifers such as spruce, fir, pine, and larch are well-adapted to the cold and harsh conditions of the boreal biome. These forests are found in high-latitude or high-altitude regions of the northern hemisphere, including Canada, Russia, Scandinavia, and parts of the United States.
Conifers in boreal forests have needle-like leaves, which help reduce water loss and facilitate the shedding of snow. They also produce cones to disperse their seeds and have thick bark for protection against cold temperatures and wildfires.
The other options mentioned, A: Sclerophyllous, B: Thorn, and D: Tropical Rain, do not typically have conifers as the dominant vegetation. Sclerophyllous forests are characterized by evergreen, leathery-leaved trees and shrubs adapted to Mediterranean and dry climates. Thorn forests are dominated by thorny shrubs and trees, often found in arid or semi-arid regions. Tropical rainforests are characterized by a diverse mix of broad-leaved evergreen trees and are not dominated by conifers.
