Final answer:
There are 10 different types of trees listed in the deciduous forest in West Virginia.
Step-by-step explanation:
The question asks how many different types of trees are listed in the given deciduous forest in West Virginia. The types of trees listed are yellow poplar, sassafras, black cherry, cucumber magnolia, red maple, red oak, butternut, shagbark hickory, American beech, and sugar maple. To determine the number of different types of trees, we count the distinct names mentioned, which is 10. Therefore, the correct answer is C) 10.