Final answer:
Catherine de' Medici is the 16th-century European Queen who, by marriage, became the Queen of Naples and Jerusalem.
Step-by-step explanation:
The question pertains to a European historical figure from the 16th century who, by marriage, became the Queen of Naples and Jerusalem. Among the options provided, Catherine de' Medici is the correct answer. Catherine de' Medici was married to Henry II of France and, upon his accession, she became the Queen consort of France and held titles from various European regions due to the extensive lands controlled by the French Crown during that period.