He glanced apprehensively at him, apprehensively
I think the answer is the second option!! Hope this helps!!
The word pair that would be best to complete the analogy: emblem:insignia is the guard:sentinel. An analogy is a similarity of both things. The words guard and sentinel share the same meaning just like the analogy; emblem:insignia. The answer is the analogy guard:sentinel.
The author's purpose is to give an example of a disadvantage or unfairness between being colored or being white and make the reader more sympathetic to the circumstance.
