A)Catorce , which means “14”
I did this when I was in Chem :)
Face changes in matter means that the matter changes from one of the following states to another.
Gas, Liquid, and Solid.
When heat is added to a solid it becomes a liquid, when head is added to liquid it becomes a solid.
This chart helps.
1) Voy a tener que alistarme.
2) Tengo que llevar comida.
3) Voy a tener que pasar a recojer a mi amiga.
Most likely D since the noun árbol is masculine and you would use ese in that case.