How did germany recover from the inflation of 1923?

A series of developments that helped Germany recover were:

The stabilization was brought about by creating a new bank, Retenbank which introduced a new currency called the Retenmark.  The money was exchangeable for bonds supposedly backed by land and  industrial plants and fixed in number. This created a confidence in  people about value of new money and hence further depreciation of the  currency (both old and new) came to an halt.

The Great Coalition led to the formation of government under Chancellor Gustav Stresemann. This led to the end of passive resistance in Ruhr and realistic goals were set for paying back the war reparations which the help of Charles Dawes. America's loan of 800M gold marks that gave the economy the initial boost. This helped the economy back to normal and eeconomic stabilization brought about political stabilization to some xtent.

A set of political reforms brought by Stresemann furthur strengthened political stability. Reforms that meant welfare for  general people like job centers, unemployment pay etc. were introduced. On the international domain he negotiated the Locarno Agreementsin (1925) and then admittance of Germany to League of Nations. These helped increase of international trade.

your answer will be b. improving roads, bridges, and other infrastructure. hope i !

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.