${?}_{{?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{{?}_{?}}\text{a}\text{l}\text{l}\text{o}\text{w}\text{s}\text{a}\text{u}\text{s}\text{e}\text{r}or\text{d}\text{e}\text{c}\text{i}\text{s}\text{i}\text{o}\text{n}\text{m}\text{a}\text{k}\text{e}\text{r}tounderstand\text{h}\text{o}\text{w}\text{t}\text{h}\text{e}\text{e}\text{x}\text{p}\text{e}\text{r}\text{t}\text{s}\text{y}\text{s}\text{t}\text{e}\text{m}\text{a}\text{r}\text{r}\text{i}\text{v}\text{e}\text{d}at\text{c}\text{e}\text{r}\text{t}\text{a}\text{i}\text{n}\text{c}\text{o}\text{n}\text{c}\text{l}\text{u}\text{s}\text{i}\text{o}\text{n}\text{s}or\text{r}\text{e}\text{s}\text{u}\text{l}\text{t}\text{s}\text{.}}$

Question $5$Answer

$a.$

Information System

$b.$

Knowledge Acquisition Facility

$c.$

Explanation Facility

$d.$

Transaction Processing System