CAN SOMEONE HELP ME?

B, blocked the only escape from yorktown

Explanation:

answers:

It is B I think.

c: in the east might be the correct answer

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."