Please help me with this

Choose the best translation of the following sentence. they went to bed at 8: 00pm. ils se sont couchés à 20h00. il se sont couché à 20h00. ils s'ont couchés à 20h00. ils s'ont couché à 20h00.

Iaccidentally clicked an answer for number 3 i don’t know if it was right or wrong but i can’t go back it won’t allow me. sooo here’s the 4th question‼️‼️‼️‼️‼️

Translate to french: hi émilie! right now i am at the zoo. there are lots of animals here. in one part of the zoo, there are brown bears. they seem very tired. next, i see a tiger! there are two tigers, and they are both running. over here, there are elephants. the baby one is cute. in this building, they have snakes. some snakes are green, some are black, but they are all long. there are also frogs here. they can jump very high! goodbye émilie!