When reading a play it is easier to imagine what's happening on stage if the stage directions there. We can picture how the actors are looking and what they're doing. And if you are acting in the play itself then it gives you information for what your character does next whether its 'exit stage left' or 'enter stage right' for example.
Answer:
1. dog
2. customers
3. barn
4. baby
5. yesterday
I believe these are the answers. English is one of my best subjects, but I don't really like analyzing sentences all that much, so it's hard for me sometimes :')
It would be rainsford falling off the yacht because at that point you wouldn't know what is going to happen and that eventually turns into a series of events.