The correct answer is option 3, which states that Gaddis are shepherds of Himachal Pradesh. Gaddis are a pastoral community found in the mountainous regions of Himachal Pradesh in India. They have traditionally been involved in sheep and goat rearing and are known for their expertise in animal husbandry.
Option 1, which states that Gaddis are fishermen of Kerala, is incorrect. This is because Gaddis are not associated with fishing activities in Kerala.
Option 2, which states that Gaddis are pastoralists of Arunachal Pradesh, is also incorrect. While Arunachal Pradesh is home to several pastoral communities, Gaddis are not among them.
Option 4, which states that Gaddis are nomads of the Rajasthan desert, is also incorrect. Gaddis are primarily found in the mountainous regions of Himachal Pradesh and are not nomadic in nature.
In conclusion, the correct answer is option 3, as Gaddis are shepherds of Himachal Pradesh.