Force variant selection before adding to cart
(This task is suitable for stores established before 2018, and subsequent establishments will not have this problem)
Most online shoppers have the unfortunate experience of opening a new purchase only to find that it's not what they expected. Often, it's because they didn't look closely at the size, color, or other variation they ordered. Forcing customers to choose an option before adding a product to their cart can stop this from happening.
How will this improve your store?
Ensuring customers order what they really want will obviously increase customer satisfaction. It's also more efficient for you because you can be confident that your customer's order is right the first time. Save time and effort at both ends!