B. la bala................ . . . . . . . . . .
I think it would be, Carlos y Sofia van ver una mitad de la costa de Puerto Rico hoy.
This translates to, Carlos and Sofia are going to see half of the coast of Puerto Rico today.
This missing word is van
"ese libro" is "that book"
"este libro" is "this book"
"aquel libro" is also "that book"
"este libro" is the correct answer because it is stating that the book is near the person talking about that book.
Answer :Piedra Labrada (Carved Stone)
"traes" might be the correct answer.