What word would best describe the process that Galileo introduced to scientific theory?

A. visualization
B. determination
C. argumentation
D. experimentation

The word that best describes the process that Galileo introduced to scientific theory is D. experimentation.

To arrive at this answer, you can start by understanding what Galileo is known for in the context of scientific theory. Galileo was an Italian physicist and astronomer who made significant contributions to the scientific method during the 17th century. He is often credited with being one of the founders of modern science.

Galileo's approach to scientific theory involved the use of experimentation to validate or invalidate hypotheses. He believed in the importance of observation and empirical evidence in understanding the natural world. Instead of relying solely on philosophical or theoretical arguments, Galileo emphasized the need for practical experimentation to test hypotheses and draw conclusions based on the results.

Therefore, the word that best captures this process introduced by Galileo is "experimentation." This term highlights the idea of actively conducting experiments to gather data and evidence to support or refute scientific theories.