Using the information provided above in question $1,$ what is the partial $($single$-$factor$)$ productivity of energy $($measured in $ of output per $ of input$)?$

Using the information provided above in question $1,$ what is the partial $($single$-$factor$)$ productivity of energy $($measured in $ of output per $ of input$)?$

$3\mathrm{.}81$

$25$

$0\mathrm{.}89$

$19\mathrm{.}48$

$4\mathrm{.}50$