Final answer:
The conflict between states with large populations and those with small populations was resolved at the Constitutional Convention of 1787 through the creation of a bicameral legislature, which included the House of Representatives and the Senate. correct option is C.
Step-by-step explanation:
The conflict between states with large populations and those with small populations was resolved at the Constitutional Convention of 1787 through the creation of a bicameral (two-house) legislature. This proposed two-chamber Congress included a House of Representatives where states were represented according to their population, and a Senate where each state had an equal number of representatives. This compromise, known as the Great Compromise, balanced the interests of both large and small states.