Question

read the paragraph. born in 1822, louis pasteur was a french scientist. he invented a process, now called pasteurizing, for preventing diseases caused by drinking raw milk. one of pasteurs key discoveries was the role that bacteria play in contaminating milk and other substances. he applied this knowledge to the development of a method for removing bacteria from milk. during the process, raw milk is heated to a specific temperature for a short time, killing harmful bacteria. starting in the 1920s, milk was routinely pasteurized in the united states. by 1950, the use of pasteurs process has prevented countless people from becoming ill. which sentence best helps readers understand the revolutionary impact of pasteurization? 1. “he invented a process, now called pasteurizing, for preventing diseases caused by drinking raw milk.” 2. “one of pasteurs key discoveries was the role that bacteria play in contaminating milk and other substances.” 3. “starting in the 1920s, milk was routinely pasteurized in the united states.” 4. “the use of pasteurs process has prevented countless people from becoming ill.”

Explanation:

The sentence about preventing countless people from getting ill shows the far - reaching and revolutionary impact of pasteurization on public health.

Answer:

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