Answer: The synonym for the word evolution is "change".
Explanation: "Change" is a synonym for "evolution" because both words convey the idea of something transforming over time. "Evolution" specifically refers to the gradual process of biological change that leads to the diversity of species on Earth, but the term can also be used more broadly to describe any type of gradual development or progress. "Change," on the other hand, can refer to any alteration or modification, regardless of whether it is part of a long-term process or a sudden occurrence. Therefore, "change" is a suitable synonym for "evolution" because both words express the concept of something undergoing a transformation.