A passage describes how a Bengaluru engineer designed a low-cost water filter for villages, citing materials, cost, and one rural pilot test. Which statement best summarises the main idea?
AThe filter cost less than ₹500 per unit, a practical price
BThe engineer ran a single rural pilot test of the filter
CThe engineer designed a water filter aimed at rural villages
DMaterials chosen for the filter are locally and easily available
Answer & Solution
Correct answer: C. The engineer designed a water filter aimed at rural villages
The passage focuses on the engineer's design intent for rural villages. Option C captures that whole-passage point. A picks one detail (cost); B picks the pilot detail; D picks the materials detail. All are accurate facts but not the MAIN idea.
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