if you improve something that already exists, it is known as a(n): *\nprocess\ninnovation\nscience\ntechnology

Brief Explanations:

Innovation can involve improving existing things by introducing new - features, better functionality, etc. A process is a series of steps, science is a body of knowledge about the natural world, and technology is the application of scientific knowledge for practical purposes. Improving an existing entity best aligns with the concept of innovation.

Answer:

B. Innovation