What may federal courts do to laws that they feel are violating the Constitution? Debate, impeach, transcribe, nullify, or review

The best answer to this is that federal courts have the
right to nullify laws that they feel are violating the Constitution.  In order to do
that, they first must review the laws.  After reviewing them, they may nullify them if
they feel the laws are unconstitutional.

Of course, there
can be debate among the members of a court over whether a given law is
unconstitutional.  However, the court as an entity does not enter into debate with
anyone else.

The words transcribe and impeach do not make
any sense in this context.

So I believe that the best
answer for this is "nullify."