Answer: D-Temperate forests of Russia.
Step-by-step explanation:
Using the process of elimination, we can determine which answer is right. Lichen only live in cold environments, Conifers live in warm to temperate.
A is wrong as lichen and deer cannot live in deserts.
B is wrong as lichen and deer cannot live in rain-forests.
C is wrong, while lichen can be found in the Canadian Tundra, there are no conifers.
That leaves D, I think.