Answer:
b. Hire an external consultant to pick new team members for you.
Step-by-step explanation:
The most appropriate option, analyzing the scenario above, would be to hire an external consultant to choose new team members for you, due to the fact that there is difficulty in choosing the qualification of the team and the volunteers who applied for the positions, so an external consultant could take this decision based on adequate parameters and less supported by biased behaviors that could favor some more volunteer by affinity or another issue that was not purely professional. In this way, a fairer, less conflicting and appropriate contracting would occur for everyone in the organization.