Yo for A
el for D
tu for B
usted for C
Translation
1.How does it not fulfill Saul with his father’s hopes?
2. The talker,Mario Vargas llosa
Mis amigas leen mucho. A ellas les gusta la serie de Harry Potter.
Ellas because they're female, Ellos would mean they're male. Hope this helps :)
Eres paciente pero divertido
"Eres" already implies the person it's talking to (you, in this case), if we wanted to make it formal, we would've used "Usted es" (You (formal) are)
