Answer:
A. True.
Step-by-step explanation:
A. True.
Eratosthenes was a Greek mathematician, geographer, and astronomer who lived in the 3rd century BC. He is famous for his accurate calculation of the Earth's circumference using the angles of shadows at two different locations on the same day. His method was widely accepted by other geographers of his time and is still considered an important milestone in the history of geography.
Posidonius, on the other hand, was a Greek philosopher, astronomer, and geographer who lived in the 1st century BC. He also made some calculations regarding the Earth's size and shape, but his methods were less accurate and less widely accepted than those of Eratosthenes.
Therefore, it is true that geography credited the calculations of Eratosthenes and rejected those of Posidonius.