Answer:
b. Are elected or appointed for different lengths of time.
Step-by-step explanation:
When compared to members of a parliamentary system who are elected at the same time and for the same term, American politicians, judges and government officers are elected or appointed for different lengths of time.
American politicians are elected for four years and can seek another term in office which will run into a total of eight years. Judges are politically appointed by the President and serve for life unless they retire, die or removed from office.