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 line that states, "courage is a man with a gun in his hand." It is a metaphor because Lee is not comparing courage to a man with a gun with "like" or "as." Instead, she uses "is", as if she is enforcing the fact that courage IS a man with a gun. That kind of bluntness is only in a metaphor, as the author gives no room for debate.
An antonym for melt would be freeze.
where da options thers no answer if there is no option