Final answer:
The chart supports that laws in the United States are affected by all three branches of government, involving a system of checks and balances across the legislative, executive, and judicial branches, with the Supreme Court having the power of judicial review.
Step-by-step explanation:
The conclusion about the system of government used in the United States that is best supported by the chart is d. Laws are affected by all three branches of government. The legislative branch, consisting of Congress, is responsible for making laws. The executive branch, led by the President, enforces these laws. The judicial branch, with the Supreme Court at its apex, interprets and reviews the laws. Checks and balances are a vital aspect of this system. For example, the President can veto legislation, Congress can override vetoes with a sufficient majority, and the Supreme Court can declare laws unconstitutional through judicial review. Therefore, all branches interact and affect how laws come into existence and are applied.