The correct answer would be;
¿A ti te preocupa no saber qué estudiar?
Answer:
—¿Cómo se llama, señor?
—Soy el Sr. Bhami.
—Mucho gusto, señor Bhami.
—El gusto es mio.
The correct answer is the number 4
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 :)