The correct answer is (D) Cure-all; remedy for all diseases; universal solution to all ills; single answer or solution for all difficulties or problems.

Panacea comes from Greek panakeia (healing all),(pan + akes [a cure] + ia)

Examples of use:

• The medicine man's patent medicine was reputed to be a panacea for all ills.
• A tomato-vodka cocktail was his version of a panacea.