Question

on my map, los angeles and san diego are just two inches apart, but the actual between the two cities is 120 miles.
options: distance, scale, legend

Explanation:

The sentence describes the real-world spatial separation between two cities, which matches the definition of "distance". "Scale" refers to the ratio of map distance to actual distance, and "legend" is the key for map symbols, neither fits the blank.

Answer:

distance