Jiwon is thinking of developing a candy specifically for college students. Before she begins manufacturing, she has decided to conduct some research to determine whether or not she should include caffeine in the candy. If the results show students prefer caffeine, she will market it as a caffeine product. If the results show students don't care about caffeine, she will market it as an energy product. Jiwon is probably in the stage of the market research process

Jiwon is probably in the Define the Problem stage of the market research process

Explanation:

Defining the problem is the main part of the marketing research process. The phase of market research starts with the definition of an issue the organization faces.  

Defining the issue that you need to address in marketing research will decide what information you need and how you can acquire the information. This will help the company explain the overarching problem or opportunity, such as how to best address the loss of market share or how to launch a new product to a specific demographic.