Final answer:
An example of an implied power of Congress is the power to regulate the sale of tobacco in the states, as it derives from the elastic clause that allows for laws necessary to execute the enumerated powers.
Step-by-step explanation:
The student is asking about the implied powers of Congress, which are not specifically listed in the Constitution but are necessary for the execution of its enumerated powers. Implied powers are granted by the elastic clause of the Constitution, which allows Congress to pass laws necessary and proper for carrying out its listed powers. One example of an implied power, following the student's options, would be the power to regulate the sale of tobacco in the states.
This example fits because while the Constitution does not expressly grant Congress the power to regulate tobacco, such regulation is related to Congress's power to regulate commerce among the states and thus can be considered an implied power. Other examples of implied powers include establishing the Internal Revenue Service to collect taxes and creating laws on discrimination in public accommodations.