International Rice Research Institute (IRRI) is located in:

Correct option is D

✅ (d) Manila: • IRRI is headquartered in Los Baños, near Manila, Philippines. • It is the world’s premier research organization for rice, founded in 1960. • Develops high-yielding, disease-resistant rice varieties and works globally to improve food security. • Has regional centers (including one in India) but its main campus is in Manila.
❌ (a) Nairobi / (c) Ethiopia: • No IRRI base there.
❌ (b) Hyderabad: • India has a regional center of IRRI, not its main headquarters.