Final answer:
Fibonacci is the scientist who did not contribute to the study of altitude. Unlike Torricelli, Pascal, and Dalton who all made significant scientific contributions to the understanding of atmospheric pressure and altitude, Fibonacci is famous for his work in mathematics.
Step-by-step explanation:
In answering which of these scientists did NOT make a key contribution to the study of altitude, it's crucial to look at their individual contributions. Torricelli invented the barometer, which is used to measure atmospheric pressure and is key in understanding changes in altitude. Pascal contributed to the understanding of how pressure decreases with altitude, known as Pascal's law. Dalton developed Dalton's Law of Partial Pressures, which is important in considering the makeup of the atmosphere at different altitudes.
Fibonacci, however, is known for a series of numbers in mathematics where the next number is found by adding up the two numbers before it. His work did not involve the study of altitude or atmospheric conditions.
Therefore, the scientist who did not make a key contribution to the study of altitude is b) Fibonacci.