Which of the following could be considered a challenge when launching a new product?

A new product typically lacks customer reviews, which are crucial for building trust and social proof. Shoppers often rely on reviews to gauge product quality and make purchasing decisions. Without them, potential customers may be hesitant to buy, making it harder to gain initial traction. While obtaining UPC codes is a necessary step, it's a procedural requirement rather than a challenge to market acceptance or consumer trust.