Question

a weakness of congress under the articles of confederation was that it could not
conduct diplomacy.
print or issue currency.
collect taxes.
declare war.

Explanation:

Under the Articles of Confederation, Congress had several weaknesses. It could conduct diplomacy, print currency, and declare war. However, a key weakness was its inability to collect taxes directly; it had to rely on states for revenue, which caused financial issues. The other options (conduct diplomacy, print currency, declare war) were powers Congress did have.

Answer:

C. collect taxes.