Answer:
A. the passage of the Pure Food and Drug Act of 1906
Step-by-step explanation:
The former president Theodore Roosevelt founded the third party called Progressive Party in the U.S. in 1912. The major goals of progressive party was to address the problems caused by immigration, industrialization, political corruption and urbanization.
The progressive Party also focused on the consumer and supported Pure Food and Drug Act of 1906 in which the sale of adulterated food and drugs was prohibited and also resulted into the establishment of the Food and Drug Administration (FDA).
Hence, the correct answer is "A. the passage of the Pure Food and Drug Act of 1906".