Which term refers to a remedy that cures all problems?

The term "panacea" refers to a solution or remedy that is believed to cure all problems or difficulties. It originates from the Greek word "panakeia," which means "all-healing." In various contexts, especially in discussions of medicine or philosophy, a panacea suggests an idealized remedy that solves not just a single ailment but all issues across the board. This concept resonates with the notion of seeking a universal solution to complex problems.

In contrast, the other terms do not connote the same meaning. "Scrupulous" relates to being diligent and careful, particularly regarding integrity or moral principles. "Mysterious" pertains to something that is difficult to understand or explain, often invoking an air of intrigue. "Venial" refers to an error or offense that is minor and forgivable. None of these alternatives capture the essence of a comprehensive cure or solution, which is why "panacea" stands out as the most appropriate choice in this context.