Final answer:
Veterinary technicians can perform tasks A, B, and D, but not C. They cannot fill medication prescriptions.
Step-by-step explanation:
Veterinary technicians can perform A, B, and D, but not C. They can obtain ELISA tests to diagnose diseases in animals. They can prescribe the appropriate treatment for animals based on their condition. They can also use dry chemistry analyzers to perform diagnostic tests on animal samples. However, they cannot fill medication prescriptions; this task is typically done by veterinarians or pharmacists.