Answer:
The "personal a" is not necessary in that sentence. If you say: "No recuerdo tu nombre" it means "I don't remember your name". If you say "No recuerdo a tu nombre" it is not grammatically correct.
Given that including the "personal a" is grammatically incorrect, then the personal "a" is not necessary.
It's Los animales
Example: Los animales se acercaron.
1.traigo
2.pongo
3.oigo
4.ves
5.I don’t what are asking for this questions. But if you are asking why is it is important to do homework than: Es importante hacer la tarea porque cuando hagas la tarea. Aprendes la tema, y lo puedes entender la tema.