Correct option is C
Indian Institute of Horticultural Research (IIHR) is an ICAR institute.
It conducts research on fruits, vegetables, ornamentals and spices. The institute headquarters is located at Bengaluru, Karnataka.
It plays a major role in horticulture development in India. Other cities listed do not house IIHR headquarters. Hence, Bengaluru is the correct location. Therefore, option (c) is correct.