Answer:
c. 7215
Step-by-step explanation:
Number of shares of Stock C = 275
Value of Stock C = $52
Number of shares of Stock D = 240
Value of Stock D = $23
The weight of stock of a given stock is defined by the total value of the stock divided by the total value of the portfolio. For stock C:

The weight of of Stock C is 0.7215 or 72.15%.