Final answer:
To determine if mineral composition affects the rate of weathering, compare the mass loss of samples B and C. If there is no measurable difference, then there is no effect.
Step-by-step explanation:
The question is asking if there was a measurable difference in the mass loss between samples B and C, and if the mineral composition affects the rate of weathering. To answer this question, you would need to compare the mass loss of samples B and C and determine if there is a significant difference. If there is a significant difference, then it can be concluded that the mineral composition affects the rate of weathering. However, if there is no measurable difference, it cannot be concluded that there is an effect. Therefore, the correct answer would be b) No, there was no measurable difference in the mass loss.