Answer:
Option C, Mathematics
Step-by-step explanation:
A scientist who is evaluating the result of any scientific experiment must have a good understanding of mathematics or statistics. All the scientific experiments incorporates mathematics /statistics to nullify or prove their assumed hypothesis. Therefore, the end results of such experiments are in terms of some numbers derived through integration of some advanced mathematical tool or theory. Experiments with quantitative end result definitely require mathematical understanding of an evaluator. However, for experiments with qualitative end result also require mathematical understanding of an evaluator as even the qualitative end results are backed by mathematical formulations, theories and concepts
Hence, option C is correct.