Final answer:
Marianne could file a claim based on a hostile work environment, given the repeated sexual comments and displays of explicit material by coworkers, which does not require physical harassment or quid pro quo elements to be proven.
Step-by-step explanation:
Marianne's legal rights in this scenario would likely support a cause of action based on a hostile work environment. Sexual harassment doesn't have to be physical or romantic in nature; it can take the form of verbal comments, jokes, and the display of sexually explicit material that creates an intimidating, hostile, or offensive work environment.
In this case, the constant sexual comments and the sexually explicit posters displayed by her male coworkers could constitute such an environment.
While her employer is not automatically immune from harassment claims, the theory of quid pro quo harassment would not apply here unless Marianne was offered job-related rewards in exchange for sexual favors by someone in a position of power. A key element of Marianne's right to action is the existence of a pattern of repeated occurrences, not just isolated incidents, which seems to be the case given the 'constant' nature of the harassment described.