A person 70 to 79 years old
A. Nonagenarian
B. Centenarian
C. Octogenarian
D. Septuagenarian
Answer: Option D
Solution (By Examveda Team)
One word substitute is Septuagenarian.Nonagenarian: a person who is between 90 and 99 years old.
Centenarian: a person who is a hundred or more years old.
Octogenarian: a person who is between 80 and 89 years old.
Septuagenarian: a person who is between 70 and 79 years old.

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