The difference between is the accent and how they pronounce certain words
It would be the first choice..
Una pizarra
I hope this helps!
Answer:
I think theres is a listening part of this to be able to choose the answer. let me know and I'll be glad to help
Nositros no / llegar al centro comercial
-Nocotros no sabemos llegar a la residencia estudiantil
yo / el profesor de literatura
-Yo conozco al profesor de literatura
Elena y Maria Victoria / patinar en linea
-Elena y Maria Victoria saben patinar en linea
(Hope this helps although I don't know if they are correct)
Good luck.