${?}_{{?}_{{?}_{?}}{?}_{{?}_{?}}\text{o}\text{c}\text{c}\text{u}\text{r}\text{s}\text{w}\text{h}\text{e}\text{n}\text{s}\text{u}\text{p}\text{p}\text{l}\text{i}\text{e}\text{r}\text{s}\text{a}\text{r}\text{e}\text{p}\text{r}\text{e}\text{s}\text{s}\text{u}\text{r}\text{e}\text{d}to\text{p}\text{u}\text{r}\text{c}\text{h}\text{a}\text{s}\text{e}\text{t}\text{h}\text{e}\text{b}\text{u}\text{y}\text{e}\text{r}s\text{p}\text{r}\text{o}\text{d}\text{u}\text{c}\text{t}\text{s}or\text{s}\text{e}\text{r}\text{v}\text{i}\text{c}\text{e}\text{s}as\text{a}\text{c}\text{o}\text{n}\text{d}\text{i}\text{t}\text{i}\text{o}\text{n}ofsecuring\text{a}\text{p}\text{u}\text{r}\text{c}\text{h}\text{a}\text{s}\text{e}\text{c}\text{o}\text{n}\text{t}\text{r}\text{a}\text{c}\text{t}\text{.}}$

Group $of$ answer choices

Reciprocity

Negotiation

Competitive bidding

Irregular business dealing

None $of$ these answers.