Which of the following best describes MLA format spacing?

If every family owned a helicopter, the world would be a lot nosier. The sound of the propellers will be unbearable, and we might never hear the sound of the birds in the morning. In addition, we might have airways, and virtual traffic lights to stop traffic. We might even be all skilled pilots in our daily lives. Lastly, I think is we invented silent and stealth helicopters, we would travel further and faster than average vehicles.