This is category 'A' spend in the ABC model - they represent a large value and a small number of purchases / suppliers. See p.17 for more information on the ABC Analysis

This is one of those questions you have to read carefully- it asks for 'elements of a business'. Cost focus and cost leadership are ways a company can improve their competitive advantage, but they're not elements of a business. The other three options are. Porter created a list of elements of a business that can help a company's competitive advantage- these can be found on p.33-34

Comprehensive and Detailed Explanation:
A performance specification outlines the desired outcomes or results without prescribing the exact methods to achieve them. This approach allows suppliers the flexibility to use their expertise and creativity to meet the buyer's requirements, thereby encouraging innovation.
Reference:
CIPS Procurement Specifications Guide

Selection criteria focus on the supplier's capability and experience (e.g., method statements). Award criteria are used to evaluate and compare proposals during the tender process, such as price or environmental considerations.

The logistics risk can be reduced by 'Sharing up-to-date information'. If the Pub tells the supplier when it's running low, they can then time the deliveries more accurately.
P. 136. A lot of the questions on the
'Partnerships' chapters of the book are common-sense questions like this. It involves reading thequestion and using logic, rather than relying on your knowledge of procurement. If you found this question easy - that's a good sign for the exam.