Explanation
1, 3 and 4 are the correct options. Binomial is based on discreate events not continuous and it assumes the events of each trial are independent of one another. This YouTube video explains it all perfectly using the chance that an ice-cream cone is broken. It's a nice memorable example to help you remember what binomial distribution is and how it works: https://www.youtube.com/watch?v=3EZbX2ftCUk - it's a very memorable example and really helped me. You can also see more info in the cips textbook p.131