In the case of Mary, who had a contagious disease, what key right may have been violated?

The key right that may have been violated in the case of Mary, who had a contagious disease, relates to the right to due process. This right ensures that individuals receive fair treatment through the normal judicial system, especially when they are deprived of life, liberty, or property. If Mary's contagious disease led authorities to impose restrictions or take actions against her without following proper legal procedures, such as giving her a chance to contest those actions or providing adequate notice, then her right to due process could indeed be considered violated.

In the context of public health, due process often intersects with the rights of individuals when the state intervenes to protect the health of the community. Therefore, if Mary was subjected to quarantine or other restrictions without fair legal processes, this would highlight a potential violation of her due process rights. The other options, while important, do not directly address the legal protections that would pertain to her situation regarding health-related constraints and government action.