Final answer:
Option 'B' a shift towards knowledge workers is not a demographic challenge but rather a change in the labor market's demand for certain skills and types of work.
Step-by-step explanation:
The question asks which of the following is NOT an example of a demographic challenge facing Canadian organizations. The options given are: gender balance in the workplace, a shift towards knowledge workers, millennial workers, generational shift, and aging population.
Among the choices, gender balance in the workplace, millennial workers, generational shift, and aging population are all well-recognized demographic challenges because they relate directly to the composition and dynamics of the workforce. However, a shift towards knowledge workers is more reflective of a change within the labor market and the type of work or skills demanded rather than a demographic challenge. Therefore, 'B. a shift towards knowledge workers' is the option that does NOT represent a demographic challenge facing Canadian organizations.