Consider the cycle of science shown in the diagram

What would most likely cause the cycle to continue?

An explanation inspires new questions and the process of making new observations.
A fact inspires new questions and the process of making new observations.
A careful systematic process is used in experiments to gather observations and data.
A fact is established and more data is needed to convince scientists that it is true.?

A fact is established and more data is needed to convince scientists that it is true.