Answer:
(c).Cost Reduction
Explanation:
Cost reduction is defined as a business process which aims at reduction in costs and elimination of all unnecessary costs. With reduction in costs, profitability increases.
Cost reduction also calls for efficient use of resources i.e optimum utilization of resources at the same time adhering to quality standards of production
In the given case, Rachel assists her CEO with a project to reduce electricity bills. This is a strategic engineering economic project focused on (c) Cost Reduction.