The correct answer is (d) Kedarnath.
Kedarnath is a Hindu temple dedicated to Lord Shiva located in the Garhwal Himalayas in the Indian state of Uttarakhand. It is one of the Panch Kedars, the five most important Shiva temples in India. The temple is situated at an altitude of 3,584 metres (11,768 ft) above sea level.
The temple is open for six months in a year, from April to November. During the winter months, the temple is closed due to heavy snowfall.
The temple is a popular pilgrimage destination for Hindus. Every year, millions of pilgrims visit the temple to offer prayers to Lord Shiva.
The temple is also a popular tourist destination. The surrounding area is home to some of the most beautiful scenery in the Himalayas.
The other options are incorrect because they are not located at the highest altitude in Uttarakhand.
(a) Rudraprayag is a town in the Garhwal Himalayas in the Indian state of Uttarakhand. It is located at an altitude of 1,150 metres (3,770 ft) above sea level.
(b) Bhimtal is a town in the Kumaon Himalayas in the Indian state of Uttarakhand. It is located at an altitude of 2,050 metres (6,725 ft) above sea level.
(c) Gangotri is a town in the Garhwal Himalayas in the Indian state of Uttarakhand. It is located at an altitude of 3,100 metres (10,170 ft) above sea level.