It refers to the tonic sylable (silaba tónica)
sol (sun) Its a word "aguda"
ra-tón (mouse) Its a word "llana" or "grave"
Mé-xi-co Its a word "esdrújula"
cán-ta-me-lo (sing it to me) its a word "sobredrújula"
Hope this helps u :)
1. Eva come muchas verduars y frutas cada dia
2. Si, Eva hace ejercicio
3. Si, cree que son sabrosas
4. Eva prefiere levantar pesas