How can I change the position of choices in a multiple choice question?

In this case you will need to add custom CSS to that question. modifying the left padding of the answer choices

I had the exact same question. Here's what I included in the javascript for the question. You can play around with the exact numbers to get it to line up properly. The 4 numbers are for top, right, bottom, and left paddings, respectively.
jQuery("#"+this.questionId+" .QuestionBody").css("padding", "0px 0px 0px 250px");

Hey Spirae,
Paste the following code in look & feel > CSS
Kindly change the id, width & margins according to your need.

[id='QID4-5-label'] {
width : 150px;
margin-left : 250px;
} 
 [id='QID4-9-label'] {
width : 150px;
margin-left : 60px;
}