\documentclass[review]{elsarticle}
\usepackage{booktabs}
\usepackage{tabularx}
\usepackage{lineno,hyperref}
\modulolinenumbers[5]
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{multirow}
\usepackage{cite}
\journal{Journal of \LaTeX\ Templates}
\bibliographystyle{elsarticle-num}
\begin{document}
\begin{figure}
\centering
\includegraphics[scale=.75]{Fig1.pdf}
\caption{The real option value of the binary tree method}
\label{FIG:1}
\end{figure}
\end{document}
