The exam class with babel

Question

I am using babel and LaTeX extensively, but have encountered an error I do not understand and would be grateful to get your assistance on.

I have prepared 2 MWE that demonstrate that merely changing this:

\usepackage[english]{babel}

to that:

\usepackage[hebrew,english]{babel}

produces an error in the exam class, but not in the article class.

Surprisingly:

1. the error is produced even without using Hebrew.

2. The error cannot be replicated with other languages (such as French, or even Arabic which is also RTL language).

MWE 1 - article class produces output:

\documentclass[12pt, a4paper]{article}
\usepackage[hebrew,english]{babel}
\begin{document}
\begin{enumerate}
\item abc
\begin{itemize}
\item bcd
\end{itemize}
\end{enumerate}
\end{document}

MWE 1 produces the following output:

MWE 2 - exam class won't produce output:

\documentclass[12pt, a4paper]{exam}
\usepackage[hebrew,english]{babel}
\begin{document}
\begin{questions}
\setcounter{question}{0}
\question What is the result of 1+1?
\begin{choices}
\choice 1
\CorrectChoice 2
\choice 3
\choice 4
\end{choices}
\end{questions}
\end{document}

If you remove the word hebrew from babel package options, the exam class will produce the following.

The error in the console is:

Package babel Warning: No hyphenation patterns were preloaded for
(babel)                the language `Hebrew' into the format.
(babel)                Please, configure your TeX system to add them and
(babel)                rebuild