Answer:
a. The primary value activity outbound logistics.
Explanation:
"Outbound logistics can be defined as the process of storing, transportation and distribution of goods to customers."
The process begins from a customer sales order, moves to a warehouse packing and completes upon the delivery of product. To ensure smooth running of outbound logistics, businesses must choose the right channels of distribution, maintain a sensible stock of inventory and optimize their delivery options.
In the given scenario, as Sandy is removing shipping cost under specific conditions, she is adding value on distribution process. Hence Option a. is correct.