In the following example, I get awkward spacing in a multicol environment in the second question. Notice that the words "Which of the following" are not spaced as they are in the first question. I'd rather have the spacing be even and have some blank space at the end of the line. Keep in mind I need two columns in this document.
\documentclass[10pt]{article}
\usepackage[inner=1.1in,outer=.7in,top=.9in,bottom=1in,paperwidth=8.5in,paperheight=11in,twoside]{geometry}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage{multicol}
\begin{document}
\begin{multicols*}{2}
\raggedcolumns
\begin{enumerate}
\item For ${i = \sqrt{-1}}$, which of the following is equivalent to $(5 - 3i) - (-2 + 5i)$? % C
\begin{enumerate}
\item
\item
\item
\item
\end{enumerate}
\item Which of the following is equal to ${(5 + 2i)(5 - 2i)}$? (Note: $i = \sqrt{-1}$) % B
\begin{enumerate}
\item
\item
\item
\item
\end{enumerate}
\end{enumerate}
\end{multicols*}
\end{document}
\raggedright
makes lines ragged as requested – David Carlisle Jan 25 '16 at 16:45