Correct answer:
Mi fruta favorita es el mango.
Igualmente means the feeling is mutual not neutral. To expound a bit more, "igualmente" means "equally." So, if someone says to you, "Good to meet you," you could respond with "Equally," which means, "It's equally good to meet you."
Para el almuerzo mi amigo come una hamburguesa con yogur.
Not hating on anyone that has hamburgers and yogurt, but most people don't do that.
