QBI "Description of the trade and explanation of the factors

I am aggregating a rental property and a independent contractor business.   I can't get past the "smart check" when asked to provide a description of the business (I can do that) and an explanation of the factors met that allow the aggregation in accordance with Regulation section 1.199A-4.   The explanation part has me stumped.  Would sole ownership and conducted in the USA be enough?

 

Thanks