<h2>Right answer: nochevieja</h2>
Noche Vieja (New Year's Eve), also called Víspera de Año Nuevo, Año Viejo or Fin de Año, is the last night of the year in the Gregorian calendar (the most widely used civil calendar in the world); this event lasts from December 31 to January 1.
During this celebration the people gather with friends and family to await the arrival of the New Year and rituals are performed, depending on the country, related to the expectations of next year.
Therefore the right option is a.
The pronoun usually comes in at the beginning of the sentence
1) Read the text fast and find the words that are cognate.
2) Use the context to guess the significance of the new words in the text.
3) Translate word for word to english.
4) Read the text multiple times.
In my opinion I think it might be 2 or 3 but its up to you, just look at the translation I did.
