The shift from D2 to D1 is called Select one: a. an increase in overall demand Ob. a decrease in overall demand Oc. a decrease in quantity demanded Od. an increase in quantity demanded Question 16 Not yet answered Points out of 1.00 Flag question The movement along D2 could be caused by Select one: Oa. an increase in price Ob. a decrease in the price of a complement Oc. a technological advance in production Od. a decrease in the price of a substituteIf the demand curve shifts from D2 to D1, then Select one: (a. firms would be willing to supply less of the good than before at each possible price (Ob. people are willing to buy less of the good than before at each possible price (Oc. people'sincomes evidently have increased (Od. people are willing to buy less of the good than before at each possible price