The option that best analyzes the results of changes in voting rights in the constitutions of 1788 and 1790 is: The changes allowed for a shift in power from the lowcountry to the backcountry.
This response accurately reflects the broader political shifts that occurred during that time period, as changes in voting rights often influenced the balance of power between different regions and social groups. The other options either misrepresent the voting rights granted or do not capture the significant political implications of the changes.