Answer:
A cause of the passage of the Pure Food and Drug Act of 1906 was the big impact of The Jungle, a novel by Upton Sinclair.
Step-by-step explanation:
The Pure Food and Drug Act was a law passed in 1906, during Theodore Roosevelt's government, whose objective was to regulate the production of food and medicine in the United States. Its purpose was to provide the quality and health of consumer goods, to avoid a social impact higher than that caused by the novel The Jungle, written by Upton Sinclair, which through fiction described the poor sanitary conditions of the slaughterhouses in the Midwest. This novel had caused a high impact on society, which began to become aware of the health of the goods it consumed, and motivated the government to regulate health issues related to the production of food and medicine.