Answer:
Two parents along with their children
Explanation:
The traditional nuclear family consists of a father, mother and their children.
B - agenda
An agenda is what the author really wants to point out (their underlying message) and it's typically written in a way where it's somewhat hidden. Example: political ads - they have an agenda for what they want to talk about and why it's important.
If Orwell wrote "Animal Farm" about schools, the dogs would be schoolyard bullies, True.