سوال ۲۰ کنکور ارشد علوم کامپیوتر ۱۳۹۷

PASSAGE 1 (excerpt):

"The term geometric modeling first came into use in the early 1970s with the rapidly developing computer graphics and computer-aided design and manufacturing technologies. It refers to a collection of methods used to define the shape and other geometric characteristics of an object. ... We use geometric-modeling methods to construct a precise mathematical description of the shape of a real object or to simulate some process. ... With computational power, we would be unable to construct and analyze sophisticated models of any practical importance."

Question: To simulate a process for practical purposes, ---------------.