The correct answer is - C. temperate deciduous forest.
If a group of hikers want to visit a biome that is located between the polar and the tropical biomes, than the temperate deciduous forest will be the best choice, as it is roughly in the middle between those two, and is not part of any of them.
The temperate deciduous forest biome is located in the mid-latitudes. It is characterized with forests that are dominated by deciduous trees, which mean that the trees are getting rid of the leaves in autumn, and than regrow them back in the spring. There's four seasons, spring, summer, autumn, and winter. The summers are relatively warm and drier, the spring and autumn are usually fresh with more rainfall, and the winters are cold and snowy.