I have finally figured it out, and I'll write it out for anyone who has this problem in the future. Based on Annette's answer, I went back into Tools and the Topic List. I found it from there.
Here are the steps:
Click on Tax Tools and then Tools. Then click Topic List. This brings up an old-timey-looking window that says "Topic List" at the top. Use the little triangles to expand the following: Federal Taxes; Prepare Your Federal Tax Return; Deductions & Credits; Deductions & Credits (again). Click on the link for Standard Deduction vs. Itemized Deductions. This takes you back into the regular software and brings up a nice graphic showing which deduction type gives a bigger refund (or presumably a smaller amount owed). There is a button below the graphic for Change my deduction.
