Answer:
The Maya's used place value and zero in mathematics.
Step-by-step explanation:
a is wrong, the Aztecs didn't write the value for absence, they built their mathematics considering what we know as fractions. Combining two different elements separated by a line to express a number.
b. is right. The Mayans developed a sophisticated math system, in which they found value in the absence and gave it a figure to represent it. They also established a combination system of small integrated figures that had the order to express value, very similar to the Arabic system.
c the Incas didn't find value on absence and they created a system of dots and thread to express amount. Their numbers consisted of the combination of dots perforated by lines to express groups and create bigger numbers.