Final answer:
Monica's frustration stems from the concept of 'relative deprivation,' which is when someone feels entitled to more relative to others, despite their apparent advantages (a).
Step-by-step explanation:
Monica's feelings of frustration result from the notion of relative deprivation. Relative deprivation exists when a person perceives that they are entitled to more than they currently have, especially in comparison to others. Even though Monica may be wealthy by societal standards, owning a home, a beach house, and vacationing abroad, her dissatisfaction is anchored in her perception that she is undervalued and underpaid compared to her colleagues, which results in feelings of relative deprivation.
An example of this concept can be seen in the case of Faith, who feels that her income should allow her family to live better, thus experiencing subjective poverty; she has enough for the essentials but not enough to meet her expected standard of living given her education and experience.