Category buyer Raheem has been tasked with receiving innovative bids from coaching and development service...

Detailed Explanation:

A (Early supplier involvement): Engaging suppliers early fosters innovation by leveraging their expertise in developing solutions.

D (Outcome-based specification): Focusing on outcomes rather than rigid inputs encourages creative and flexible proposals.Conformance specifications (C) restrict innovation, and standards (E) limit supplier flexibility. Reference: CIPS Level 4, Innovation in Procurement Specifications.