Final answer:
National movements are the movements that may cover an entire country and are often backed by national organizations, addressing issues on a national scale.
Step-by-step explanation:
The type of movement that might span an entire country and possibly be led by a national organization is best described as C) National movements. These movements are characterized by their scope and level of influence, which often extend to the national stage. National movements can address a wide range of issues, from social reform to economic or political changes. They can be contrasted with local, grassroots movements that are more community-based, or global movements which navigate issues that cross international borders and may be supported by non-governmental organizations (NGOs) such as the International Federation of Organic Agriculture Movement (FOAM) and the Oxford Committee for Famine Relief (OXFAM).