${?}_{{?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{i}s\text{t}\text{h}\text{e}\text{o}\text{n}\text{e}-on-\text{o}\text{n}\text{e}\text{i}\text{n}\text{t}\text{e}\text{r}\text{a}\text{c}\text{t}\text{i}\text{o}\text{n}\text{b}\text{e}\text{t}\text{w}\text{e}\text{e}\text{n}\text{a}\text{c}\text{o}\text{m}\text{p}\text{a}\text{n}\text{y}representative\text{a}\text{n}\text{d}\text{t}\text{h}\text{e}\text{b}\text{u}\text{y}\text{e}\text{r}\text{.}}$

${?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{i}s$ the one$-on-$one interaction between a company representative and the buyer.

Personal selling

Sales promotion

Direct marketing

Public relations