Final answer:
The notation "C-14" represents Carbon-14, a radioactive isotope of carbon with 6 protons and 8 neutrons, used in carbon-14 dating.
Step-by-step explanation:
The notation "C-14" represents Carbon-14, which is a radioactive isotope of carbon. In nuclear notation, the letter 'C' indicates the element carbon, which has an atomic number of 6 (the number of protons in the nucleus). The number 14 represents the mass number, which is the sum of protons and neutrons in the atomic nucleus. Therefore, carbon-14 (C-14) has 6 protons and 8 neutrons, since the mass number minus the atomic number (14 - 6) equals the number of neutrons.
Carbon-14 is well-known for its use in the Carbon-14 dating technique used in archaeology and other fields to date organic materials. Thus, the correct answer to the question is A) Carbon-14. Other isotopes, such as deuterium and tritium , are special cases of hydrogen and have their own designated symbols, D (²H) and T (³H), respectively.