% \include{subcaption} % If want to use subcaptions

\begin{figure}[H]
    \centering
    \includegraphics[width=0.48\textwidth]{./figures/td0rms.eps} % <-- This % is important for side by side figures
    \includegraphics[width=0.48\textwidth]{./figures/td0value.eps}
    \caption{Part (d)}
\end{figure}
\begin{figure}[H]
    \centering
    \includegraphics[width=0.48\textwidth]{./figures/qlearn.eps}
    \caption{Part (d)}
\end{figure}