A passage describes how a Bengaluru engineer designed a low-cost water filter for villages, citing materials, cost, and one rural pilot test. Which best summarises the MAIN idea?
AThe engineer designed a water filter aimed at rural villages
BThe filter cost less than ₹500 per unit, a practical price
CThe engineer ran a single rural pilot test of the filter
DMaterials chosen for the filter are locally and easily available
Answer & Solution
Correct answer: A. The engineer designed a water filter aimed at rural villages
A captures the whole-passage focus on a design intent for rural villages. B/C/D lift single details and dress them as the main idea.
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