Final answer:
Response time is typically understood as the time taken from when a request is submitted until the first response is produced, aligning most closely with option (b).
Step-by-step explanation:
The term response time in a business context generally refers to the amount of time it takes for a service or system to react to a given input or request. Regarding the options provided:
- (a) The total time taken from the submission time till the completion time
- (strong>(b) The total time taken from the submission time till the first response is produced
- (c) The total time taken from submission time till the response is output
- (d) None of these
However, the most commonly accepted definition of response time is closest to option (b), which signifies the total time taken from the submission time of a request until the first response is produced.
Whether we are discussing customer service inquiries or system latency, response time often places an emphasis on the initial reaction rather than the completion of a request or the resolution of an issue.