Which of the following supporting details emphasize the babylonians' contribution to astronomy? a. the lunar calendar b. the concept of zero c. algebraic functions d. the creation account in the gilgamesh epic

The correct answer is - A. the lunar calendar.

The Babylonians are well known for their ingenuity, and they managed to break the ice in lots of scientific fields, as well as constructing lots of things for practical usage that are of great value for the daily functioning of the people. One of them was the lunar calendar. This calendar was used for organizing the things better in the society, based on the time of the year, and it was also of great help in the sense of having orientation in time and planning for the future. Since this calendar was based on the Moon, it meant that the Babylonians had to observe the movement and shape of the Moon on the sky which was a step forward in astronomic sense.