The answer is estan because estan in this case means "are".
they are sick.
The sentence is plural
Estamos is the only one that fits.
Answer:
enfjenckdajsckjdqivjuqehv ireknvjoen
Explanation:
zjodkjdnckfbvhendlsnbjklfsnbkjfnbvoyipdójbvhdjn bjidf
How am I supposed to complete the dialogue logically to help you if there is nothing to complete, I don't wanna sound rude, I just want to help