What organization is primarily responsible for the regulation of biotechnology practices?

The Food and Drug Administration (FDA) is primarily responsible for regulating biotechnology practices, particularly those that involve drugs, biologics, and food products derived from biotechnology. The FDA ensures that these products are safe and effective for public use through stringent testing and approval processes. This includes oversight of clinical trials, monitoring of manufacturing processes, and enforcement of labeling requirements.

While other organizations like the Centers for Disease Control and Prevention (CDC) and the Environmental Protection Agency (EPA) play significant roles in public health and environmental protection related to biotechnology, their focus is different. The CDC primarily addresses public health concerns, including disease control and prevention, while the EPA concentrates on the environmental impact of biotechnology products, such as genetically modified organisms (GMOs).

The National Institutes of Health (NIH) is involved in medical research and funding but does not regulate biotechnology practices per se. Instead, it provides guidance and funding for research initiatives that may involve biotechnological advancements.

Thus, the FDA's pivotal role in evaluating and ensuring the safety and efficacy of biotechnological products makes it the correct answer for the organization primarily responsible for the regulation of biotechnology practices.