Final answer:
Captain Parker instructed the colonists at Lexington to 'Don't fire unless you're fired upon.' This instruction was given during an encounter with British troops, where the colonists fired the first shot. option c is answer
Step-by-step explanation:
During the events at Lexington, Captain Parker gave the colonists the instruction of 'Don't fire unless you're fired upon.' According to accounts from Colonel Smith, a British soldier, the British troops approached a group of colonists who were assembled in military order with loaded weapons.
The colonists fired the first shot, and in response, the British troops returned fire, killing several of them. option c is answer