\documentclass[11pt]{homework}
\usepackage{enumerate}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FILL THESE OUT %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\studname{student name}
\studuni{student uni}
\collab{names and unis of students you discussed the homework with}   % THE NAMES AND UNI'S OF STUDENTS YOU DISCUSSED WITH
\hwNo{1}  % HOMEWORK NUMBER 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
\maketitle

\section*{Problem 1}
\begin{enumerate}[(a)]
\item your answer for part (a)

\item your answer for part (b)

\item your answer for part (c)

\end{enumerate}

\section*{Problem 2}
Write your answer here ...

\section*{Problem 3} 
Write your answer here ...

\section*{Problem 4}
\begin{enumerate}[(a)]
\item your answer for part (a)

\item your answer for part (b)

\end{enumerate} 


\end{document}