The correct answer is - c. pine cones.
The pine cones are a product of the pine trees, and these types of trees can only be found in more temperate and cold climates. The pine trees are highly evolved to long, snowy, harsh, cold winters, and that is because the places where they live (in the mid-latitudes) tend to have long and harsh winters.
On the other hand, a pine cone will not be found in the tropical rainforests simply because they are too hot and too humid for this type of highly specialized trees, so they would die out in that environment very quickly.
