The aryans brought each of the following things to india except a. a new religion b. a new lifestyle c. a new language d. a new form of agriculture

A new form of agriculture -- that's the answer that doesn't fit.

The Aryan people who came into India adopted agricultural methods of others who preceded them there.  But they brought a distinctive language that had roots in Sanskrit, Greek and Latin.  They also brought new religious ideas. The Upanishads are religious texts connected to the Aryan religious tradition.  As for a new lifestyle, the caste system that became a key part of Indian life was introduced by the Aryans.

Ithink it is c. the government would try to limit the influence of outside cultures.

If you are using an unfamilar word you should look up the definition of the word to be sure you are using it correctly.