Final answer:
The isotopic symbol for a copper isotope with 60 neutrons is not provided in the question options, but for a copper isotope with 34 neutrons, the symbol is ^63Cu. Since copper has 29 protons, adding 34 neutrons would lead to a mass number of 63.
Step-by-step explanation:
The isotopic symbol for a copper isotope with 60 neutrons can be determined by adding the number of protons (which for copper is always 29) to the number of neutrons to give us the mass number of the isotope. In this case, 29 protons + 60 neutrons = 89. Therefore, the isotopic symbol would be ^89Cu, which is not one of the options provided (A. ^60Cu, B. ^63Cu, C. ^65Cu, D. ^68Cu).
However, because the question most likely has a typo and should have said a copper isotope with 34 neutrons (since copper's most stable isotopes are ^63Cu and ^65Cu), the correct answer would be D. ^63Cu. This is because 29 (atomic number) + 34 (number of neutrons) = 63 (mass number).