The Gravity Model of spatial interaction predicts that larger cities will have a stronger influence on one another and that the attraction between two cities is inversely related to the distance between them. This means that cities that are close together in terms of geography and have a larger population will have a stronger bond.
Evaluating the options:
A) Houston, Texas and Albany, New York - These cities are far apart and have different population sizes.
B) Medford, Oregon and Portland, Oregon - These cities are relatively close together, with Portland being a larger city, likely resulting in a strong bond.
C) Bradenton, Florida and Cadwell, Georgia - These cities are not very close and also have different population sizes.
D) Trenton, New Jersey and Pittsburg, Pennsylvania - These cities are relatively far apart as well, and while they are in the same region, they do not exhibit the strongest bond.
E) New York City, New York and Los Angeles, California - These cities are large but are extremely far apart from each other.
Based on the closeness and size of the cities, the most likely pair to have the strongest bond according to the Gravity Model would be:
B) Medford, Oregon and Portland, Oregon.