Hello,
One way I found interesting since only one line of code has to be changed is to edit the "template.css" file in the particular template you are using.
For instance, for the "citronade" template, I search the template.css file for the table.question custom tag and found this at line 634:
table.question tbody th.answertext,table.question tbody th.arraycaptionleft{text-align:right;}
All I did was to change the alignment of the text in this way:
table.question tbody th.answertext,table.question tbody th.arraycaptionleft{text-align:left;}
Now all your surveys using this template will have the questions (subquestions) align to the left