Question

which explains why supreme court justices are given lifetime appointments?
they give justices original jurisdiction.
they protect justices from political pressure.
they connect justices to appellate courts.
they provide justices with unlimited power.

Explanation:

Lifetime appointments shield Supreme Court justices from political pressure. This allows them to make impartial decisions based on the law rather than short - term political interests. Original jurisdiction is a power of the Supreme Court (Article III, Section 2 of the U.S. Constitution) and not related to lifetime appointments. Appellate courts are part of the judicial structure but not the reason for lifetime appointments. Justices do not have unlimited power; they are bound by the Constitution and laws.

Answer:

They protect justices from political pressure.