Spacing out a "prefer not to say" column?

Hi!

I’m trying to implement a “prefer not to say” column into a series of questionnaires I’m running (using a single select matrix for each question). I’ve put the column at the end, but I’m wondering if there’s any way to space it further from the other columns, so that it’s harder for participants to get confused and accidentally select it as if it’s one of the extremes on my scale?

Thank you in advance!