The three Es are; Effectiveness, Efficiency and Economy. Sometimes a 4th E is added which is Equity (but this is mainly for the public sector).

Internal stakeholders are those who work within the business so include the legal department, employees and end-users. End-users mean those people and departments who will be using the product or service. For example if Gabriel is procuring new software- an end-user would be anyone who would be using that software (whether they're employees, volunteers or agencies). CIPS outlines types of stakeholders on p.64

The correct answer is 'Yes- mediation involves a neutral third party and gets both parties to attempt to reach a compromise'. Be careful not to confuse mediation with arbitration - arbitration is when the buyer and supplier agree to accept a third party's decision which will solve the disagreement issues. See p.112 for more information on solving disputes

The correct answer is 'accommodating'. This Question: is based
on the Thomas-Kilmann Conflict model on p.87. This comes up quite a bit in the exam. It is comprised of 5 techniques for dealing with conflict; competing, collaborating, compromising, avoiding and accommodating. In this instance, the supplier should have a high degree of co-cooperativeness and a low degree of assertiveness as the long-term relationship is very important- more important than the outcome of the disputed invoice.

In a monopoly there is only one supplier- therefore their power is strong. Buyers in this market are price takers and their power is weak. There is generally a strong barrier to entry into a monopoly market so the threat of new entrants is low. There is no rivalry. There are many questions in the exam on Porter's 5 Forces - see p. 39