${?}_{{?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{{?}_{?}}is\text{a}\text{p}\text{o}\text{p}\text{u}\text{l}\text{a}\text{r}\text{c}\text{o}\text{m}\text{m}\text{e}\text{r}\text{c}\text{i}\text{a}\text{l}\text{w}\text{e}\text{b}\text{i}\text{n}\text{a}\text{r}\text{p}\text{r}\text{o}\text{d}\text{u}\text{c}\text{t}\text{u}\text{s}\text{e}\text{d}in\text{v}\text{i}\text{r}\text{t}\text{u}\text{a}\text{l}\text{s}\text{a}\text{l}\text{e}\text{s}presentations.}$

$(TCO2)$

Group $of$ answer choices

WebEx

Microsoft SharePoint

WebCT

Google Docs