The modern numbering system and the zero were both mathematical innovations made within which empire? Aksum
China
Gupta
Mauryan

Gupta Empire.

Explanation:

The Gupta Empire was one of the empires established in India and was in existence during the late 3rd century CE. The period was also known as the Golden Age of the Indian empire for the different developments and innovative discoveries during this period.

The numbering system as well as the concept of zero were invented by Aryabhatta, an Indian astronomer, during this period. Many other advancements such as the discovery of the different planets, the calculations of the solar and lunar eclipses, the approximate value of pi, negative numbers, calculation of square roots, etc were also seen during this period.

Thus, the correct answer is the Gupta empire.  

a. factors that are used to make goods and services

the correct answer is d. the monetary reserve is a set of funds represented in currency, money or similar, saved as a forecast of possible needs or for legal reasons.

the increase or decrease in the monetary base influences in the increase or decrease of the inflation rate. therefore, the excess of monetary reserve will cause the reduction of inflation.