The correct answer is (d). Hemkund Sahib is located in Himachal Pradesh, while the other three gurudwaras are located in Uttarakhand.
Paonta Sahib is a gurdwara located in Paonta Sahib town in the Sirmaur district of Himachal Pradesh, India. It is one of the five takhts, or seats of temporal authority, of Sikhism. The gurdwara was built in the 17th century by Guru Gobind Singh, the tenth Sikh Guru. It is said that Guru Gobind Singh spent some time here in meditation and penance.
Reetha Sahib is a gurdwara located in the village of Reetha Sahib in the Haridwar district of Uttarakhand, India. It is said that Guru Nanak Dev, the first Sikh Guru, stayed here for some time during his travels. The gurdwara is built on the site of a banyan tree under which Guru Nanak Dev is said to have meditated.
Nanak Matta is a gurdwara located in the village of Nanak Matta in the Tehri Garhwal district of Uttarakhand, India. It is said that Guru Nanak Dev visited this place during his travels. The gurdwara is built on the site of a cave where Guru Nanak Dev is said to have meditated.
Hemkund Sahib is a gurdwara located in the Garhwal Himalayas in the Chamoli district of Uttarakhand, India. It is one of the most important pilgrimage sites for Sikhs. The gurdwara is built on the banks of a lake called Hemkund Lake. It is said that Guru Gobind Singh visited this place during his travels.