The correct answer is:
B. Seasonal Fashions
Muckrakers were American journalists who denounced corrupt institutions and leaders and played an extremely visible part during the Progressive Era (1890s-1920s).
Muckraking magazines took on corporate monopolies and political organizations while attempting to raise public awareness of urban poverty, wages, labor, and working conditions in industry and agriculture, prostitution, cattle processing, meat packing, patent medicines, and child labor.
No seasonal fashion would have made it to those magazines.