The survey editor allows you to customize the width of the row legends in pixels (i.e., the column that contains the answer option text).
Reminder: A question must contain rows for this option to be available.
To define the custom row legend width, select the question so it appears in the stage area of the survey editor. Then click on the "Basic" style link found in the top, right corner of the question.
The "Question Display Options" window will appear. Locate the "Row Legend Width" field and enter the desired width in pixels. Then select "Save" and the row legend width will be set for the question.
Tip: Use the "Preview" button to see how the custom width looks for your question.