Quarantines that regulate the movement of plants into a country are a form of which type of disease control?

The correct answer, exclusion, refers to measures that aim to prevent pests and diseases from entering a specific area or country. Quarantines that regulate the movement of plants are a direct application of exclusion strategies, as they establish barriers to the introduction of potentially harmful organisms. By controlling the entry of plants, these regulations help safeguard local ecosystems and agriculture from invasive pests and diseases that could otherwise cause significant harm.

In this context, exclusion focuses on preemptive actions that avoid the risk of introduction of diseases rather than trying to manage or eradicate them once they are present. This proactive approach is essential in maintaining the health of agricultural systems and preventing outbreaks of diseases that can have far-reaching consequences.