Answer:
C) Muckrakers and women’s organizations
Step-by-step explanation:
Muckrakers and women's organizations were the most important forces behind the passing of the Pure Food and Drug Act of 1906, which was signed into law that same year by president Theodore Roosevelt.
These two group, in the years prior, dedicated their efforts to denounce several unsanitary and dangerous practices that were common in the food and drugs industry, particularly in the meatpacking industry, and in the industry that produced prescription drugs for kids.