How did the maya contribute to the field of mathematics?
they founded new mathematical branches such as geometry and trigonometry.
they were one of two civilizations to independently devise the concept of zero.
they discovered the idea of pi, which is widely used in present-day mathematics.
they discovered mathematical tools such as the ruler, compass, and calculator.

   They were one of two civilizations to independently devise the concept of zero.

Explanation:  One of the contributions that Maya gave to mathematics is the invention of zero, which is also independently invented by the Babylonians. By introducing zero into the counting system, the concept of counting was significantly improved, a system of place values was used to expand counting, and the ability to express very large values, as well as in our well-known numerical system.

i think the answer is a and i hope this ; ))

your answer is a hope this