Which of the following was one contribution Muslim mathematics made to todays world

A. A wisely used system of numerals
B. Advanced trigonometry
C.the Pythagorean theorem
D. A system of negative numbers

A. A wisely used system of numerals

One contribution of Muslim mathematics to today's world is the development of a wisely used system of numerals. The answer is A. A wisely used system of numerals.

The correct answer is A. A wisely used system of numerals.

To arrive at this answer, let's analyze the given options:

A. A wisely used system of numerals: Muslim mathematicians introduced the Hindu-Arabic numeral system to the world. This numeral system, consisting of the numbers 0-9 and their place value system, revolutionized mathematics and greatly enhanced the ease of performing arithmetic calculations.

B. Advanced trigonometry: Trigonometry was already known to ancient civilizations such as the Greeks, Babylonians, and Indians. Muslim mathematicians certainly made significant contributions to trigonometry, but advanced trigonometry was not their exclusive contribution.

C. The Pythagorean theorem: The Pythagorean theorem was discovered by the ancient Greeks, specifically the mathematician Pythagoras. While Muslim mathematicians made contributions to geometry and expanded on existing mathematical knowledge, the Pythagorean theorem was not one of their unique contributions.

D. A system of negative numbers: The concept of negative numbers predates Muslim mathematics and can be traced back to ancient Chinese and Indian mathematicians. Muslim mathematicians did contribute to the development of algebraic notation and equations, but the establishment of negative numbers cannot be solely attributed to them.

Therefore, only option A, a wisely used system of numerals, can be considered as a unique contribution of Muslim mathematics to today's world.