Final answer:
The total volume when combining the 95% stock and the 10% stock depends on the amounts being mixed and cannot be determined with the given options.
Step-by-step explanation:
When combining the 95% stock and the 10% stock, the total volume of the resulting solution depends on the amount of each stock solution being mixed. If we assume equal volumes of each stock solution, the total volume would be the sum of the individual volumes. For example, if we mix 100 mL of the 95% stock and 100 mL of the 10% stock, the total volume would be 200 mL.
Therefore, the correct answer would depend on the specific amounts of each stock solution being mixed, and the options given do not provide enough information to determine the total volume accurately. So, none of the options provided (A, B, C, D) can be confidently identified as the correct answer.