Answer:
Perfume Dept?
Explanation:
This is difficult to answer. Polyester clothing is popular. Esters are widely used in perfumes. Shoes will likely have polyester components. I was first thinking Ester might be in the perfume section, mostly because Mark doesn't know squat about perfumes.
There is a lot of polyester-based clothing, but since the option specifies Men's clothing I would judge that since men don't often buy shiny clothes, that the best answer is the perfume section. Esters generally smell pleasant.