Option 1 -> Free product trials allow customers to test products before purchasing, encouraging first-time buyers and building confidence in the product.
Option 2 -> Bulk discounts incentivize customers to purchase larger quantities by offering reduced unit prices for volume purchases.
Option 3 -> Loyalty rewards programs provide points or benefits to repeat customers to encourage continued patronage over time.
Option 4 -> Buy-one-get-one-free offers promote sales by giving customers an additional product free when they purchase one at full price.
Hence, Option 1: Free product trials -> This promotional strategy was implemented at retail outlets to allow potential customers to experience the product firsthand without commitment, reducing purchase hesitation and effectively converting trial users into paying customers -> correct