Give that the nuts weigh 2 whole and a 2/3 pounds, raisins weigh 1 whole and a 5/6 ponds, and the chocolate chips weigh 1 whole 7/8 pounds.
All these ingredients are mixed to obtain the mixture.
Note that this mixture contains the above 3 things in the quantity mentioned. And there is no other stuff in the mixture.
So the weight of the individual ingredients would add up to get the weight of the mixture, therefore the weight of the mixture is calculated as,
Thus, the mixture weigh 6 whole and a 3/8 pounds.
Therefore, option (c) is the correct choice.