In the short run, when wages Improved productivity causes aggregate supply to _______ and shifts the aggregate supply curve to the ________. Multiple choice question. increase; left decrease; right increase; right decrease; leftare fixed, output (GDP): Multiple choice question. will contract if the price level decreases because profit margins increase and increasing production is profitable. will contract if the price level increases because profit margins decrease and reducing production is more profitable. will expand if the price level decreases because profit margins increase and increasing production is profitable. will expand if the price level increases because profit margins increase and increasing production is profitable