In a science lesson, a teacher explains how the development of the theory of gravity was influenced by the work of several scientists, from Galileo's experiments to Newton's laws, highlighting that knowledge is constantly refined over time. What does this statement reflect about the nature of science?

1. Science is a collaborative and evolving field.

2. Science is based on fixed principles that do not change.

3. Scientific progress is driven solely by individual discoveries.

4. Science is an isolated activity with little input from outside sources.

Choose the correct option: