"which issue did the virginia plan, the new jersey plan, and the great compromise address at the constitutional convention (1787)? "

The correct answer for the question that is being presented above is this one: "d. a method of determining state representation in Congress." 

Here are the following choices:
a. the power to regulate interstate commerce
b. the number of justices on the Supreme Court
c a system for electing the president
d a method of determining state representation in Congress