Answer:
The answer is: 
 A. He decreased the size of the Army and Navy.
Step-by-step explanation:
Thomas Jefferson's goal as president was to restore the principles of the American Revolution. 
 He reduced the army to 3,000 soldiers and 172 officers, the navy to 6 frigates, and foreign embassies to 3 in Britain, France, and Spain. 
 The Military Peace Establishment Act 
It was a documented and advanced set of laws and limits for the U.S. military. It was approved by Congress and signed on March 16, 1802