Question

94 in the u.s., at least one in every state, d.c. and puerto rico; the lowest level of federal courts; federal trials can be held only here
choose an answer
district courts
direct elections
white primary
stare decisis
dont know?

Explanation:

The description refers to the lowest tier of U.S. federal courts, where federal trials are first held, with at least one located in every U.S. state, D.C., and Puerto Rico. District courts fit this definition, while the other options are unrelated to federal trial court structure.

Answer:

district courts