Question

How was transportation standardized under the Qin?
A.
Roads were the same width.

B.
Carriages were the same height.

C.
Everyone paid the same road tax.

D.
Axles of carriages were the same length.

Answer 1

You answer should be:

D. Axles of carriages were the same length.

Answer 2

The correct answer is (D).

"Axles of carriages were the same length".