Final answer:
The phrase 'thin and querulous' suggests that the community members were becoming physically weak and irritable due to the vegetable diet.
Step-by-step explanation:
The phrase 'thin and querulous' suggests that the community members were becoming physically weak and irritable. By being on a vegetable diet, they were not receiving the necessary nutrients and their health was suffering. As a result, they became thin and easily irritated. This indicates that the vegetable diet was not beneficial for their overall well-being.
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