${?}_{{?}_{{?}_{?}}\text{a}\text{r}\text{e}\text{o}\text{f}\text{t}\text{e}\text{n}\text{m}\text{o}\text{r}\text{e}\text{e}\text{f}\text{f}\text{e}\text{c}\text{t}\text{i}\text{v}\text{e}\text{t}\text{h}\text{a}\text{n}{?}_{?}{?}_{{?}_{?}},\text{p}\text{a}\text{r}\text{t}\text{i}\text{c}\text{u}\text{l}\text{a}\text{r}\text{l}\text{y}\text{f}\text{o}\text{r}sensitive\text{i}\text{n}\text{f}\text{o}\text{r}\text{m}\text{a}\text{t}\text{i}\text{o}\text{n}\text{.}}$

Group $of$ answer choices

Electronic communications, short face$-to-$face meetings

Short face$-to-$face meetings, electronic communication

Electronic communications, telephone conversations

Telephone conversations, short face$-to-$face meetings