7.   The original purpose of the Constitutional Convention of 1787 was to 

A. develop the principle of states' rights.
B. solve the slavery issue.
C. revise the Articles of Confederation.
D. elect the first president of the United States. 

C?

  Supporters of the New Jersey Plan 

A. called for a legislature in which each state had one vote.
B. rejected the idea of three branches of government.
C. required that Senators be selected by a House of Representatives.
D. supported a bicameral legislature.

It talks about representatives so I'll say C?

7. c -- correct

New Jersey Plan -- C -- wrong

10.   John Quincy has been a citizen of the United States for 8 years. He is 27 years old. If John decides to run for Congress, what are his options? 

A. He can run for the Senate, but not the House.
B. He can run for the House, but not the Senate.
C. He won't ever be qualified to run for the Senate.
D. He can't run for the House or the Senate for at least one more year.

B? 

      

I know the New Jersey Plan question is not D.

11.   The purpose of the Constitution is presented in the 

A. Articles.
B. Preamble.
C. Bill of Rights.
D. Amendments.

B?

10. B -- right

11. B -- right

Supporters of the New Jersey Plan  

A. called for a legislature in which each state had one vote. 
B. rejected the idea of three branches of government. 
C. required that Senators be selected by a House of Representatives. 
D. supported a bicameral legislature. 

So I'll say A?

Yes! A. is right for the NJ Plan.

To find the correct answer to this question, we need to understand the historical context and purpose of the Constitutional Convention of 1787. The best way to do this is to research the topic.

The Constitutional Convention of 1787 was a gathering of delegates from 12 of the 13 original states (Rhode Island did not send delegates) that took place in Philadelphia. The delegates convened to address the failures of the Articles of Confederation, which served as the first governing document of the United States but proved to be weak and ineffective.

The correct answer to this question is indeed C. The primary purpose of the Constitutional Convention was not to develop the principle of states' rights, solve the slavery issue, or elect the first president of the United States. It was specifically convened to revise the existing Articles of Confederation and create a stronger and more effective central government for the United States.

By choosing C, you have correctly identified the primary purpose of the Constitutional Convention of 1787.