Answer:
Es peligroso revelar tu numero de telefono y tu dirección.
Es seguro revelar tus actividades favoritas y tu deportes favoritos
A and C are safe, however, B and D seem more unsafe.
Explanation:
A and C translate to Favorite activities, Favorite sports.
B and D translate to Telephone number/Phone number, Address.
hope this helps. :^)
Algunas cosas son hermosas
Todos ustedes (hombre solo plural, informal, Espana)