Why is designing a successful service operation often more difficult than a successful design of a tangible product? A. Tangible products are more personalized B. More challenging inventory considerations C. Lack of computer-aided design D. Strong element of customer involvement

The correct answer is letter "D": Strong element of customer involvement.

Explanation:

Designing a competitive service operation could be more complicated than designing a tangible product because the first requires analyzing inner customers' components which can be considered as an intangible product. Client's concerns and expectations are not the same but a standard must be established while scheming a service operation attempting to satisfy most of a business audience.