1. C. Osculate is the word that does not mean hostility. Osculate is a term in mathematics.
2. B. Efface is the word that does not mean a second appearance. To efface means to erase.
3. A. Decapitate is the word derived from Latin word for "head". Capita in Latin means head.
It is an example of something that can be avoided through the power of memory.
Used to add emphasis and effect. For example: Why don't you leave me alone?