Answer:
A). Focus both groups on an issue that they have in common, such as improving customer satisfaction.
Explanation:
Conflict resolution is one of the crucial processes in an organization's management as if not addressed properly it may affect the productivity and growth of the organization.
As per the question, option A i.e. 'Focus both groups on an issue that they have in common, such as improving customer satisfaction' exemplify the most appropriate way to decrease the conflict between both the sales staff and educational designers. Focusing on an issue that is common to both the groups like 'ensuring consumer satisfaction' would not help reduce the conflict among them but also establish a kind of unity between them to address the issue effectively which would turn fruitful to enhance the productivity of the organization. Therefore, option A is the correct answer.