Hi,
first, this only happens if you decrease the width of your desktop screen.
If you use a tablet or a smartphone you will see below a screen width of 1025 pixel this
and with 1025 pixel this
Now different options
a. Enter a soft hyphen at desired positions ­ or a <wbr>.
b. Try to decrease the subquestion width.
c. Use a lower font-size of the answer options
d. Don't use these long answer options, but explain the scale in the question text and use symbols
Joffm