Answer the following question given this paragraph: 

The scientific method is employed by scientists around the world, but it is not always conducted in the order above. Sometimes, hypothesis are formulated before observations are collected; sometimes observations are made before hypothesis are created. Regardless, it is important that scientists record their procedures carefully, allowing others to reproduce and verify the experimental data and results. After many experiments provide results supporting a hypothesis, the hypothesis becomes a theory . Theories remain theories forever, and are constantly being retested with every experiment and observation. Theories can never become fact or law .


Q: What does a hypothesis become after many experiments provide results supporting it?

 Choices:

- a model

- a fact

- a study

- a theory

A:
a theory
