Which of the following is considered an affiliated island?

Guam is considered an affiliated island due to its political status and association with the United States. It is an unincorporated territory, which means that while it is under the jurisdiction of the U.S. federal government, it does not have the same full rights as a U.S. state. This territorial status allows for certain governance and regulatory frameworks that are specific to U.S. territories, particularly concerning agriculture and trade.

In the context of phytosanitary practices, affiliated islands like Guam are subject to unique regulations related to plant health and disease management, as they often deal with specific biosecurity threats that affect their agricultural systems. Being an affiliated island means that Guam has unique agricultural needs and considerations that are important in phytosanitary discussions.

The other options represent either states or areas that do not share the same classified status as Guam. Hawaii, while also an island, is a state and therefore does not fall under the same category as unincorporated territories. California and Florida are U.S. states located on the mainland and have their own sets of agricultural regulations, separate from those that would apply to territories such as Guam.