Answer: Market Sector
Step-by-step explanation:
According to the given question, Melissa is working in the fashion based industry and the her main task in the job is to analyzing the new fashion trends in the social media.
Melissa is in the market sector part in an organization as her company are designing the various types of branded clothes on the basis of latest analysis and trends.
The market sector is widely used in the various types of financial and the economical based industry where the product of the company are produced on the basis and proper analysis in the market for the direct competition.
Therefore, Market sector is the correct answer.