How have nato's operations changed over time?
nato only directs peacekeeping measures now
nato no longer defends western europe
nato has fewer member countries now than when it began
nato's activities now include crisis management and peacekeeping

Answer

NATO's activities now include crisis management and peacekeeping.

Explanation

NATO is the North Atlantic Treaty Organization which was created back in the year 1949 by the United states, Canada and several Western European nations, for the purposes of providing collective security against the soviet Union. This was  was the first peacetime military alliance the United States entered into outside of the Western Hemisphere.  The main purpose of NATO  was to defend each other from the possibility of communist Soviet Union taking control of their nation.

NATO's activities now include crisis management and peacekeeping. Peacekeeping s a role held by the Department of Peacekeeping Operations as a unique and dynamic instrument developed by the organization as a way to help countries torn by conflict to create the conditions for lasting peace.

b. british workers

your answer would be (a)