which sentence is punctuated correctly 1 point

1 After driving all day and night, we finally reached are destination, and we happily went to sleep.
2 For about 3 minutes, the helicopter hovered overhead, and then flew away, to the east
3 In 2019 eight new students enrolled in our school, but olnly five of them stayed
4 On monday i am going to go hicking

2 For about 3 minutes, the helicopter hovered overhead, and then flew away, to the east