Based on these lines from"the gorgon's head" by nathaniel hawthorne is an imperative sentence is: b. "be careful that they do not see you before you see them".
the "imperative" sentence is a command, so i think it's the answer b.
hope this help
Answer: The word you are looking for is "resistance"
Explanation: Someone who resists is someone who fight back, if you are apart of the resistance you are part of a group that is trying to prevent something by action
hope this helps