You can use a calculator to calculate $\displaystyle{f{{\left({x}\right)}}}\usepackage{cmbright}\Huge\$ for each input x. Alternatively, you may recognize that an input of 1 must have an output of 0 and an input of the constant e must have an output of 1, because $\displaystyle{y}={\ln{{x}}}={\log}_{{e}}{x}\usepackage{cmbright}\Huge\$ , or $\displaystyle{{e}}^{{y}}={x}\usepackage{cmbright}\Huge\$ . Also, inputs less than 1 will have a negative output. As the inputs increase, so will the outputs. Of the four choices, this is the only table of values that fits these conditions.