The correct answer is: Motivator factor
Rationale: Herzberg used the other three terms to describe the same set of factors: the ones that maintain morale but do not positively motivate (maintenance); prevent dissatisfaction but do not promote satisfaction, in the same way that hygiene prevents ill-health but does not promote well-being (hygiene); and that relate to the environment of work rather than to the work itself (environmental). The opposite set of factors is 'motivator' factors in the work itself, which - according to Herzberg - positively create satisfaction and motivation to superior performance.
Pitfalls: An exam question may refer to hygiene factors by any one of its three names, so it is worth using this question to check that you know them all!
