The situation you've described, where bringing on more qualified resources or providing even better quality than originally planned results in reducing the amount of time required to complete the project, is an example of the "Exploit" risk response.
Here's a brief explanation of why "Exploit" is the correct answer:
Exploit: This risk response strategy is used when the organization wants to ensure that a positive risk (an opportunity) is fully realized. By taking proactive steps to guarantee the occurrence of the opportunity (in this case, reducing the project time by bringing in more qualified resources or enhancing quality), the organization is exploiting the opportunity.
The other options are:
Enhance: This strategy involves increasing the probability or impact of an opportunity, but it doesn't necessarily guarantee that the opportunity will be realized. It's more about improving chances rather than ensuring the occurrence