The correct answer is A, La. Let's look at this!
"Mochila es negrea"
If you are referring to the backpack (Mochila) the pronoun is feminine. There's really no explanation further I can give you as to why it's feminine, just the way the Spanish language said it would be feminine,
Also, if you are referring to black (negra) this is feminine because you are referring to the backpack as feminine, therefore La, should be your prounon!
If you don't understand let me know! I hoped this helped! :)
Answer:
Pedro would go with "es" Maria y yo would go with "somos" Pedro y Pablo would be "son" and I would go with "soy"
Explanation:
Una manera de comunicarme con la persona es utilizando mis manos y expresión en mi cara. Sería como una película. Si fue accidente de carro, mover mis manos como si guiara y luego golpearlas entre sí. Me señalo a mi mismo para indicar que fui yo la persona que tuvo el accidente. Si tengo teléfono, le muestro para que marque los números de emergencia y hablé por mi.