According to the passage about pasteurisation, what did Louis Pasteur first use gentle heating for?

Read the passage: Pasteurisation takes its name from the French scientist Louis Pasteur, who showed in the 1860s that gently heating wine could kill the microbes that made it turn sour. The same principle was later applied to milk, which can carry bacteria responsible for serious illnesses. In a common modern method, milk is heated to about seventy-two degrees Celsius for around fifteen seconds and then cooled quickly. This kills most harmful bacteria without boiling the milk or greatly changing its taste. Pasteurised milk still needs to be kept in a refrigerator, because the process does not destroy every microbe. It does, however, make the milk far safer to drink and allows it to stay fresh for several days longer.

1. A Option A: Keeping milk cold in refrigerators
2. B Option B: Preventing wine from turning sour
3. C Option C: Boiling water for drinking
4. D Option D: Making cheese taste stronger

Answer checked 11 October 2026 · How we write and check questions