Answer:
The correct answer is letter "D": The subject matter experts may not relate strongly to a project due to the temporary nature of their involvement.
Explanation:
Subject matter experts are professionals whose expertise in certain fields is wide. They are usually called for assessments or training when part of a project must have the consultancy of somebody who has already been successful in that matter. Though, the subject matter expert is not part of the project itself. These professionals work as third party advisers whose work is requested only when needed.