what transfer nutrients into the blood stream and body.

The food you eat, the air your breathe. All from cells.

Well for short, the blood cells transfer :)

Answer d would be the best answer, for he wants to have part in biotechnology. an ekg technician is quite similar.

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.