Answer: Continuum
Step-by-step explanation:
The question is given a description of the service delivery system, a kind of system which is targeted at meeting customers needs while profit is being made by the organization.
Continuum is a word used to describe a process with stages that vary slightly and lies between two eventualities.
The continuum in the question is used to describe the stages in the service delivery system, from the level of low customer contact that gradually progresses to a level of high customer contact.