Answer:
D
Step-by-step explanation:
Kshatriyas were responsible for fending off intruders in Ancient India.
The caste system was prevalent in India during the ancient period of times and there were classified into four classes Brahmins, Kshatriya's, Sudras and Vaishyas.
Kshatriya's belong to the second class and they were called warriors.
As they were warriors it was their duty to drive away from the intruders and protect their country from attackers and invaders.