A GIS specialist creates a model tool to allow others to run analysis on their...

To make variables editable by users when running a model, you must right-click the model variables and check "Parameter." This exposes the variable as an input or output parameter in the tool interface.

Create Variable > From Parameter (Option A) is used when building the model, not when exposing variables.

Open > Properties (Option C) accesses variable properties but does not expose parameters for tool users.

Therefore, the correct answer is B.

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