A natural logarithm expression ln(x) = y can be rewritten as
[tex]\begin{gathered} \ln (x)=y \\ e^y=x \end{gathered}[/tex]Hence, for an expression
[tex]\ln (4)=x[/tex]This can be rewritten as
[tex]e^x=4[/tex]The answer to this problem is option D, which corresponds to the equation written above.