The hypothesis is that there are laws of nature, like those that govern the movement of the planets, which govern everything that happens in the world—and that in accordance with those laws, the circumstances before an action determine that it will happen, and rule out any other possibility.
[What does it all mean, T.Nagel]
Is "and that" connected with "The hypothesis is"?
Is the word "it" referring to "the action"? thanks!