How did the achievements of the gupta empire make higher-level mathematics possible?
10 points asap
a.
they invented writing materials that allowed for the easy correction of mistakes.

b.
they developed the idea of multiplication as repeated addition.

c.
they discovered the number pi and were the first to calculate the area of a circle.

d.
they invented the numeral zero and the decimal system of numbers.

D. They invented the numeral zero and the decimal system of numbers.

Explanation:

Before Gupta empire introduced this numerical systems, the people who live in their territory used comparisons with another object as a unit of measurement.  

Example: 3 bag of rice, one arms of cloth, etc.

This make tradings and architecture becomes really complicated since it is easier for people to cheat one another with such vague unite of measurements.

The introduction of  numeral zero and the decimal system accelerate the development of mathematics in this area dramatically, they called it the Gupta Numerals.

The numerals make it possible for the people to be more productive, for example, they use it to help them make proper adjustment and measurements to build tools and buildings. Over-time, the numeral system keep undergoing change and development, until it eventually developed into what we see today and used in higher-level of mathematics.

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.

glass wants to live in a world of super heroes and villains. he have lived all his life trying to be responsible for the creating the origin story of a super hero; he schemed and caused many incidents (many of them fatal) hoping that someday someone with superpowers would show up and save the day.

he knew himself very much. he saw himself as a villain of a real-life super hero story. he was aware of his strengths (more than smart enough for being manipulative and scheming) and weaknesses (having fragile bones and having to rely on his mind to succeed).