Nadie.
Patricia is supposed to respond with the opposite of whatever Victoria says. Victoria said, “I’m going to speak with someone.” Therefore, Patricia should said “I’m not going to speak with anyone.”
Double negatives are allowed in Spanish, so the correct word which is the opposite of “alguien” is “nadie.”
The wander would be (b) Yo soy
In spanish how you say this would be “me llamo John.”