Final answer:
The Appalachian Mountains pass through Kentucky, not Iowa; making Kentucky the correct answer. This mountain range influences the area's resources, climate, and culture.
Step-by-step explanation:
The Appalachian Mountains pass through several states in the eastern United States, including Kentucky. This mountain range does not extend to Iowa. Therefore, the correct answer is Kentucky (option a). The Appalachians are a significant geographical feature that played an important role in the settlement and development of the areas they traverse. They provide natural resources, influence weather patterns, and have historical significance. The Shenandoah Valley and Great Smoky Mountains National Park are part of the Appalachian range, and they also highlight the cultural aspects such as Upland South folk culture that evolved in the mountainous regions.