Final answer:
The strategic/consultative selling model evolved in response to changes in customer buying behavior, advancements in technology, and increased competition.
Step-by-step explanation:
The strategic/consultative selling model evolved in response to all of the above: changes in customer buying behavior, advancements in technology, and increased competition.
Changes in customer buying behavior have led to new expectations and demands from customers, requiring salespeople to adapt their selling approach. Advancements in technology have provided new tools and platforms for salespeople to engage with customers and gather information. Increased competition has created a need for salespeople to differentiate themselves and provide value-added solutions to customers.