Answer the following question given this paragraph: 

Scientists usually begin an investigation with facts. A fact is a bit of information that is true. Facts come from data collected from observations. Facts can also come from experiments that have been run. Data is factual information that results from an investigation. Facts and data are not subject to opinion or bias. An opinion is someone's subjective view or position on a subject.


Q: In science, what is a bit of information that is true?

 Choices:

- lie

- theory

- falsehood

- a fact

A:
a fact
