Born in 1822, Louis Pasteur was a French scientist. He invented a process, now called pasteurization, for preventing diseases caused by drinking raw milk. One of Pasteur's key discoveries was the role that bacteria play in contaminating milk and other beverages. Pasteur applied this knowledge to the development of a method for removing bacteria from milk. During the process, milk is heated to a high temperature for a short time, killing harmful bacteria. Starting in the 1920s, milk was routinely pasteurized in the United States. The practice became widespread by 1950. The use of Pasteur's process has prevented countless people from becoming ill.

Question

Born in 1822, Louis Pasteur was a French scientist. He invented a process, now called pasteurization, for preventing diseases caused by drinking raw milk. One of Pasteur's key discoveries was the role that bacteria play in contaminating milk and other beverages. Pasteur applied this knowledge to the development of a method for removing bacteria from milk. During the process, milk is heated to a high temperature for a short time, killing harmful bacteria. Starting in the 1920s, milk was routinely pasteurized in the United States. The practice became widespread by 1950. The use of Pasteur's process has prevented countless people from becoming ill.

Which sentence BEST helps the reader understand the revolutionary impact of pasteurization?

"He invented a process, now called pasteurizing, for preventing diseases caused by drinking raw milk."

"One of the Pasteur's key discoveries was the role that bacteria play in contaminating milk and other beverages."

"Starting in the 1920s, milk was routinely pasteurized in the United States."

"The user of Pasteur's process has prevented countless people from becoming ill."

Answer 1

"The use of Pasteur's process has prevented countless people from becoming ill."