AR
a (he/she)
Amos (we)
aís (you all)
an (Ellos / ellas)
ER
e
Emos
éis
en
IR
i
imos
isteis
ieron
I think the answer is B because it says I don’t know my cousins friend
"Estén" is the correct answer.
El entrenador espera que los deportistas --- en forma = The trainer waits so that the athletes/sportsmen --- in shape.
If you put "estén" which means "are" the sentence will be correct.
Hope it helped!
La música instrumental conocida como Lyra es el grupo de cuerdas