Price management is crucial for low-cost retailers to maintain profitability. This includes negotiating better pricing, managing costs effectively, and ensuring competitive pricing for volume sales.

Comprehensive and Detailed Explanation:
Partnership sourcing is most appropriate for products that are critical to the buyer's business, involve high spend, and are technically complex or require innovation. The chocolate brownie cake is the company's most popular product, indicating high sales volume and strategic importance. Establishing a partnership with suppliers for this product can lead to benefits such as improved quality, innovation, and supply chain efficiency.
Reference:
CIPS L4M6 Study Guide

The correct answer is 'arms length'. This is a tactical purchase (as it is low value) and keeping the supplier at arms-length means that Red Manufacturing could possibly exploit them to reduce their prices (think back to the Kraljic matrix and where Blue Business would likely fall). A Partnership or Single- Source relationship requires investment into the relationship, and as the products are low value and Red Manufacturing have a lot of other suppliers, they should not be investing time in developing that relationship with Blue Business. An adversarial relationship wouldn't be advantageous as it may lower the performance of the supplier. See the relationship spectrum on p.5 - this is a hot topic for the exam

Tail spend items are low value, high volume. P. 132

The correct answer is 'Yes- the Public Sector is regulated by EU procurement regulations which prohibits this'. This is stated on p.122. Please note that this study guide and exam were written before Brexit. Once Brexit happens, nobody knows what will happen with this.