Concept:Substitute the given numbers into the expression, then use the order of operations: multiply first, then subtract.Explanation:Given: w=12, x=5, y=6, and z=4.The expression is wx−yz.Substitute the values: wx−yz=12×5−6×4.First, multiply: 12×5=60 and 6×4=24.Then, subtract: 60−24=36.Therefore, the value of wx−yz is 36.Answer:36, which is option C.