Final answer:
Zara ensures they are selling items customers want by sending surveys to their customers via email and following trends created by influencers. They also use PDAs to collect data from customers and complete research on items sold by their rivals.
Step-by-step explanation:
Zara ensures they are selling items customers want by sending surveys to their customers via email. They also follow trends created by influencers and use PDAs to collect data from customers on what kind of clothes to stock in stores. Additionally, Zara completes rigorous research on items sold by their rivals to stay competitive in the market