If the public library shared by the adjacent towns of Redville and Glenwood were relocated from the library’s current, overcrowded building in central Redville to a larger, available building in central Glenwood, the library would then be within walking distance of a larger number of library users.
Conclusion
The library would be within walking distance of a larger number of library users if relocated to central Glenwood.
Evidence (that is because)
There are many more people living in central Glenwood than in central Redville. People generally will walk to the library only if it is located close to their homes.
Evaluate
This argument has a Plan / Goal format.
PLAN: relocate the library to central Glenwood
GOAL: more library users in walking distance of the library
The author suggests moving the library to central Glenwood will put it within walking distance of more users because there are more people in central Glenwood than in central Redville, where the library currently is.
Maybe there are more people there, but a way smaller proportion of them use the library. Maybe there are reasons why people are less willing to walk to places in central Glenwood.
Goal
Let's find an answer that reinforces the idea that a move to Glenwood would make the library more accessible by foot to more people.