Ai-c, ii-a, iii-bBi-c, ii-b, iii-aCi-a, ii-b, iii-cDi-a, ii-c, iii-bAnswer: B. i-c, ii-b, iii-a Read Explanation: Red cabbage leaves - Natural acid-base indicatorMethyl orange - Acid-base indicatorOnion, clove - Olfactory indicator Read more in App