You should show the words you are supposed to use in the sentence so I can help you!
Answer:C. Vincent se presentó a Rose
Explanation: to is a and se is her/him self
Tengo miedo de que fernando no mejore su comportamiento y esto traiga conflictos a nuestra amistad.
It would be la mejor. Hope this helps!
Elena va a viajar a Perú en abril. English translation || Elena is going to travel to perú in April.