The most appropriate word to fill in the blank is eke.
The other options are not as accurate. Find suggests that the poor ones are able to easily find a living, which is not the case. Go suggests that the poor ones are able to simply go out and get a living, which is also not the case. Bring suggests that the poor ones are able to bring in a living, which is also not the case. Eke is the best option because it suggests that the poor ones are barely able to scrape together a living, despite the economic liberalization in the country.
