Which of the following statements is true of a knowledge worker?

A) Larger product life cycles create a need for the knowledge worker.
B) This category of workers includes only product developers or producers.
C) Constant focus on retaining an old process without any change creates a need for the knowledge worker.
D) They are employees who need and use information to perform their work.

A knowledge worker is an employee who utilizes information and knowledge to perform their work. They are involved in creating, acquiring, and sharing knowledge within an organization. Option A is incorrect because product life cycles do not determine the need for knowledge workers. Option B is incorrect as knowledge workers include a wide range of professionals such as analysts, designers, consultants, etc. Option C is incorrect because knowledge workers focus on improving processes and introducing new ideas rather than sticking to old processes.