The us constitution gives congress the power to

a) conduct trials in the u. s supreme court

b) combine state and federal trial courts

c) create inferior courts as necessary

d) close the state courts during a us trial

C) create inferior courts as necessary

Explanation:

The U.S constitution gives congress the power to: Create inferior courts as necessary

The only court that directly created by the Constitution is the Supreme court. But it mentioned that the congress can create lower federal court 'from time to time'. This mean that creating a lower court is allowed if necessary, especially for handling smaller cases that can take away the time/attention of the supreme court justices.

it was douglas macarthur..