Identify the segment in the sentence which contains a grammatical error.
The government of India has allowed field trials of two new varieties of indigenous develop GM brinjals in eight states of the country.

Correct option is C

Option (c) contains an error.
Explanation: The word "develop" is incorrect here because an adjective or past participle is required to describe the noun "GM brinjals". The correct form is "developed", not "develop".
Correct sentence: The government of India has allowed field trials of two new varieties of indigenous developed GM brinjals in eight states of the country.
Grammatical Rule Used:
When a noun is modified by a verb, it must be in its past participle (V3) form to function as an adjective.
Example:
Incorrect: The factory makes processed and refine food.
Correct: The factory makes processed and refined food.