documentclass[review]{elsarticle}
usepackage[T1]{fontenc}
usepackage[english,francais]{babel}

Package frenchb.ldf Warning: Figures' and tables' captions might look like
(frenchb.ldf)                `Figure 1:' which is wrong in French.
(frenchb.ldf)                Check your class or packages to change this;
(frenchb.ldf)                reported on input