The correct answer is (b) Solan.
The University of Horticulture and Forestry is located in Solan, Himachal Pradesh, India. It was established in 1962 as the Regional Horticulture Research Station, Solan, and was upgraded to a university in 1986. The university offers undergraduate, postgraduate, and doctoral programs in horticulture and forestry. It has a strong research focus and has made significant contributions to the development of horticulture and forestry in India.
The other options are incorrect.
(a) Coimbatore is a city in Tamil Nadu, India. It is known for its textile industry and is home to the Coimbatore Institute of Technology.
(c) Palampur is a town in Himachal Pradesh, India. It is known for its apple orchards and is home to the Indian Institute of Horticultural Research.
(d) Pant Nagar is a city in Uttarakhand, India. It is known for its agriculture and is home to the Govind Ballabh Pant University of Agriculture and Technology.