Final answer:
The correct answer to the student's question is B) Gravity. The Gravity model analyzes interactions based on principles akin to Newton's Law of Universal Gravitation but applied to human geography, such as trade, migration, or information flow between different points.
Step-by-step explanation:
A Gravity model, based on the principles of social gravity, looks at the possible interactions between many points within a given area. The correct answer is B) Gravity.
The gravity model in geography is used to predict the movement of people, information, or goods between locations in space. This model is analogous to Newton's Law of Universal Gravitation, which describes the gravitational attraction between masses. In the context of human geography, the model is used to estimate the amount of interaction between two cities, typically for planning transportation systems, understanding urban development, or analyzing trade patterns.
The gravity model takes into account the size (such as population or economic activity) of the locations and inversely weights the distance between them, positing that larger places attract more interactions but that these interactions are diminished the further apart the places are.