Final answer:
The power of Congress stemming from the necessary and proper clause is to create the draft. This flexibility comes from the Elastic Clause in the Constitution, allowing Congress to make laws for executing its responsibilities.
Step-by-step explanation:
The power of Congress that comes from the 'necessary and proper' clause of the US Constitution is C. The power to create the draft. This clause, also known as the Elastic Clause, gives Congress the power to make all laws deemed 'necessary and proper' for executing its duties. Options A, B, and D (collecting taxes, electing the President, and declaring war) are specifically enumerated powers given to Congress in the Constitution, outside of the necessary and proper clause. However, the 'necessary and proper' clause has been used to justify the establishment of military draft, as it may be seen as necessary and proper for the defense of the nation.
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