During the Vietnam War, why did antiwar protests increase after US forces attacked Viet Cong bases and supply lines along the Ho Chi Minh trail?

The attacks on Viet Cong bases and supply routes in Cambodia widened the conflict beyond Vietnam. Many people who opposed the war viewed this expansion as an escalation, so protests increased. The correct choice is “Protestors saw the attacks as an escalation of the war.”

AI-written and checked against the verified answer.