Answer: 26 million Soviet citizens
The correct answer is letter C
Explanation: Terrestrial planets are those formed mainly by rocks and metals, have a solid surface without the incidence of rings, as is the case with Mercury, Venus, Earth and Mars. Mercury is the smallest planet in the solar system, its core consists of dense metal, especially iron.
The answer is D
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The best answer is C. physician's pledge to care for patients.
Hippocrates was a Greek practitioner of medicine, known by many today as the "Father of Modern Medicine" and established the Hippocratic oath which is still used today and required doctors to uphold ethics when caring for their patients. His philosophy of medicine, which includes the idea of doing no harm to a patient is a foundation for western medicine today.