According to the two-factor theory of motivation, all of the following are sources of job dissatisfaction EXCEPT:

A) work itself.
B) base wage or salary.
C) working conditions.
D) organisational policies and administration.
E) supervision.

The two-factor theory of motivation, also known as Herzberg's motivation-hygiene theory, posits that job satisfaction and dissatisfaction arise from two different sets of factors. Factors leading to job satisfaction are called motivators (e.g., the work itself, recognition), while those causing job dissatisfaction are called hygiene factors (e.g., salary, working conditions, company policies, supervision). The work itself is considered a motivator, not a source of job dissatisfaction.