Final answer:
A marketing survey employing a 1 to 5 scale for responses is an example of coding, transforming qualitative descriptors into quantitative data. The correct answer is option C.
Step-by-step explanation:
A marketing survey that contains questions that are to be answered on a scale of 1 to 5, with 1 being the worst and 5 being the best, is an example of C. coding. In market research, coding is often used to simplify and standardize responses to survey questions so that they can be easily quantified and analyzed statistically. When using a 1-5 scale, each number corresponds to a qualitative descriptor, such as a level of satisfaction, which can be converted into quantitative data for analysis.