% !TeX encoding = UTF-8
% !TeX spellcheck = en_US
% !TEX TS-program = lualatex
\documentclass{article}
\usepackage[nostamp]{moodle}
\ifPDFTeX % FOR LATEX and PDFLATEX
	\usepackage[utf8]{inputenc} % necessary
	\usepackage[T1]{fontenc} % necessary
\else % assuming XELATEX or LUALATEX
	\usepackage{fontspec}
\fi
\begin{document}
\begin{quiz}{Example}
\begin{multi}[feedback={abc: def}]{Multiple Choice}
abc: def
\item[fraction=100]* abc: def
\item 6
\end{multi}

\end{quiz}
\end{document}