Berlin Airlift, 1948 Which sentence best completes this diagram? Stalin cut off supply lines to democratic West Berlin.
Stalin allowed free access to West Berlin by railroad and air.
Stalin united all the Allied sector of Berlin under one city government.
Stalin had a wall built in Berlin to separate East and West Berliners.

Stalin cut off supply lines to democratic West Berlin.

Explanation:

All of Berlin was in Soviet Union occupation zone as declared at end of WWII.

However  West Berlin was split between USSR having East Berlin and British/American and French having half of the capital like half of Germany itself was split up.

Stalin cut off all land transportation routes into the Allied zone.  Fortunately Allied/American air transport kept West Berlin supplied with necessities of food, fuel, medicine etc.  Until Stalin had to give up his Cold War attempt to capture all of Berlin without armed conflict.

i would go with the last one

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

hope this !

have a great day!