Question

which activity does a local health department perform when providing health and environmental services?
ensuring the safety of medicines worldwide
providing national health guidelines
overseeing day - to - day health issues in a county
providing funding for international health goals

Explanation:

• 确保全球药品安全（ensuring the safety of medicines worldwide）通常是国际组织（如世界卫生组织）的职责。
• 提供国家健康指南（providing national health guidelines）一般是国家层面卫生部门的工作。
• 为国际健康目标提供资金（providing funding for international health goals）更多是国际援助机构或国家政府在国际事务中的行为。
• 地方卫生部门（local health department）的主要职责是管理所在地区（如县 county）的日常健康事务（overseeing day - to - day health issues）。

Answer:

overseeing day - to - day health issues in a county