Product knowledge isthe skill that the sales rep needs to address this challenge, because it enables the sales rep to confidently and convincingly explain how their product is superior to the competitor’s product, and how it can better solve the customer’s needs and challenges. The sales rep should be able to highlight the unique features and benefits of their product, and differentiate it from the competitor’s product in terms of value, quality, and performance. Sales acumen and forecasting are not the best answers, because they are not directly related to the challenge of dealing with a customer who is comparing products. Sales acumen is the ability to understand the sales process and the customer’s behavior, and apply the best strategies and techniques to close the deal. Forecasting is the ability to predict the future sales outcomes based on the current pipeline and historical data. References: Certification - Sales Representative - Trailhead, [Sales Rep Training: Create Effective Selling Habits - Trailhead]