Dryel Is a Procter & Gamble Product That Allows Consumers

Dryel is a Procter & Gamble product that allows consumers to dry-clean their clothes in a dryer.Before launching the product,P&G researchers visited consumers' homes and watched as people sorted laundry,creating piles of darks,whites,delicates,and items that would go to the dry cleaner because the people were unsure how to clean them.This was an example of _____ research.

A) observation
B) mall intercept
C) visualization
D) action-based
E) experiment