Answer:
The correct answer is the option D: responsiveness.
Step-by-step explanation:
On one hand, responsiveness is the name given, in the field of marketing, to the term that refers to the company's willingness to help the customers and provide prompt service. Moreover, this dimension's main focus is on the promptness and attentiveness regarding the customer's concern, complain, requests and more. Furthermore, it shows the ability of the company to adjust its service to what the buyer needs and it is communicated by the length of time that the customer have to wait until being attended.
On the other hand, the concept of responsiveness makes understandable that when Veronica's major criterion is speed her most imporant quality dimension is the responsiveness.