where on my form can I verify that I checked that 'someone else can claim me as a dependent?

On the first page of the 1040 up by Standard Deduction it says....

Someone can claim:  You as a dependent

Before filing you can preview the 1040 or print the whole return
https://ttlc.intuit.com/community/accessing/help/how-do-i-preview-my-turbotax-online-return-before-filing/00/26160