A result of Theodore Roosevelt's philosophy about conservation was A) the regulation of the drug industry. B) the creation of new railroads. C) the creation of national parks. D) the regulation of the food industry.

The correct answer is C) the creation of national parks.

He believed that the way that industry was spreading as well as communities that it might bring harm to the natural wonders of the United States. This is why he introduced numerous acts to protect these natural beauties and wonders through the establishment of national parks who would protect the beauty of American nature from people.

There are several major results of Theodore Roosevelt’s philosophy about conservation, but the best option from the list would be "C) the creation of

national parks"