Answer by JKismyhusbandbae: A) Porque mejoran las relaciones sociales.
Why: "Mucho se ha hablado de que comer en familia es un asunto cultural, muy común en las sociedades latinoamericanas." They are eating for more sociable relationships with family.
It means one "doesn't have too" or "you should not"
Depends on the context
To what degree do you appreciate African influence in your community?