As given by the question
There are given that the profit of $16 milonin 2018 and $24 milion in 2019.
Now,
To find the profit,
[tex]\frac{24-16}{16}\times100[/tex]Then,
[tex]\begin{gathered} \frac{24-16}{16}\times100=\frac{8}{16}\times100 \\ =\frac{1}{2}\times100 \\ =0.5\times100 \\ =50\% \end{gathered}[/tex]Hence, the correct option is C.