Plz help!!
 Which of the following statements is the best definition of a blockade?
 A. A blockade is a group of soldiers Recruited from a foreign country who serve for the money.
 B. A block it is a military tactic in which one army moves into place to face another army. 
 C. A blockade is a wooden fence built to defend a colonial settlement.
 D. Blockage is the shutting off of a port by ships to keep people or supplies from moving in or out.