Choice "C" is correct. As illustrated below, a shift outward (increase) in supply, increases quantity demanded (Q2) at equilibrium, accompanied by a decline in price. Thus, an increase in the market supply of beef would result in an increase in the quantity of beef demanded.

Choices "d" and "b" are incorrect, as seen in the graph above. There is an increase in the quantity of beef demanded and a decrease in the price of beef.
Choice "a" is incorrect, because there is no information in the question pertaining to any "shift" in the beef demand curve or in the demand for any complimentary products (e.g., pork).