Select the most appropriate word to fill in the blank.
Everything in the village was grown organically as the majority of the population indulged in farming for _____.

Correct option is A

The correct option to fill in the blank is (a) sustenance.
Sustenance means food or other necessities needed to live; support for life. (आजीविका, निर्वाह)
Example: Many tribal communities grow food for their own sustenance.
Why others are incorrect:
· (b) maintenance: refers to upkeep of machinery/building (रख-रखाव)
· (c) nourishment: process of providing nutrition (पोषण)
· (d) nutrition: scientific study of food and diet (पोषण विज्ञान)