What does ILRI primarily focus on?

The International Livestock Research Institute (ILRI) primarily focuses on research related to livestock improvement, making this the correct choice. ILRI aims to enhance the productivity and sustainability of livestock systems in developing countries. Their research encompasses various aspects, including breeding techniques, animal health, and management practices. This work is crucial because livestock play an essential role in the livelihoods and food security of millions of people, especially in rural areas.

Emerging from the understanding of genetics, animal nutrition, and disease resistance, ILRI’s efforts contribute directly to improving the growth, productivity, and resilience of livestock species. This aligns with broader goals of enhancing food security, reducing poverty, and addressing environmental concerns associated with livestock production.

While other options mention important areas such as urban infrastructure, vaccine development, and health program administration, they do not align with the primary mission of ILRI. The organization's focus remains firmly grounded in livestock research and development to empower communities reliant on these systems, thus clarifying why the selection related to livestock improvement is correct.