When project deliverables under contract need to be modified, the project manager should enter into formal negotiations with the appropriate parties (including the consultant) to assess whether changes can be agreed upon. Any agreed changes must be documented and approved through the formal change control process.
According to the PMBOK Guide - Seventh Edition, project managers manage procurement relationships and resolve issues by applying negotiation and conflict resolution techniques. The goal is to preserve the integrity of the contract while addressing valid concerns.
Option B ignores the issue and risks misalignment.
Option C is unnecessarily drastic and can lead to delays without cause.
Option D could escalate tension and affect stakeholder relationships.
References:
PMBOK Guide - Seventh Edition, Procurement Performance Domain
PMI Practice Standard for Project Contracts
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