What are prohibited goods?

Prohibited goods are defined as items that cannot be imported or exported due to legal restrictions imposed by a government or international authorities. This can include products that may pose a threat to national security, public health, or the environment. The legal framework for these prohibitions is typically established by customs regulations, international treaties, or domestic laws, and this status means that any attempt to trade in such goods is not permitted under any circumstances.

The other options describe items that may have certain restrictions or requirements but do not fall under the strict definition of prohibited goods. For instance, items that are allowed with special permits are permissible under certain conditions, suggesting that there is a process through which they can be legally handled. Similarly, items requiring additional tariffs are still importable, although they incur extra fees that could affect their market price. Finally, items that are highly regulated but permitted still have a legal avenue for import or export, often subject to extensive oversight rather than outright bans. Each of these reflects restrictions or regulations rather than total prohibition, which is why they do not align with the correct definition of prohibited goods.