Which of the following is a health measure taken by the national government to improve public health?
a. providing better health facilities to underdeveloped counties
b. thoroughly checking food products before they are sold in the market
c. checking sanitation and clean water supply in your community

Perform surgeries is the correct answer.

1.)dr. natterson- horowitz came to realize that their isn't much of a difference between animals and humans. just like humans, animals can suffer from illnesses and diseases like breast cancer, self injury, anxiety, and many more. she also discovered how they even treated and performed surgical procedures on animals just as if the animal it self were human. the los angeles zoo called dr. natterson- horowitz because they knew that she was a doctor and that  she would be able to recognize what was wrong with the gorilla. they knew that humans and gorillas were similar, so instead of calling another veterinarian, they called a doctor.