'Coeval' means the same age or existing at the same time as another person or thing, especially in the same era.
Option B - 'Duplicate' means to make an exact copy of something. Thus option B is incorrect.
Option C - 'Counterfeit' means made to look like an original of something.Thus option C is incorrect.
Option D - 'Corresponding' means similar or equivalent. Thus option D is incorrect.
Option A - 'Of the same age' means people living in the same era. Thus option A is the correct answer.
'Coeval - Of the same age'