Use the correct spanish preposition in the following dialogue:
el nombre oficial de la capital es "santiago de león de caracas".
miren la estatua de bolívar.
apunta hacia el camino que va (por; para) la playa.
¿se viaja mucho desde aquí (por; para) ir a la playa?
no, no mucho, pero (por; para) viajar a la playa debemos terminar de estudiar. aquí hay mucha gente en la plaza.
si, la población de la capital es de tres millones de personas.
con tanta gente creo que es buena idea irnos pronto (por; para) un café.
¿(por; para) qué charlie?
¡(por; para) comer antes de toda esa gente!
¡yo vine a la plaza (por; para) ver la estatua de bolívar y (por; para) probar arepas!
there should be 8 answers picking the correct form of por or para

Learning the differences between por and para is always hard because these two words translates into the same words in English for, by, on, through, because of, in exchange for, in order to, as well as other prepositions and phrases.

So let's explain each case:

Apunta hacia el camino que va para la playa

Here the preposition para stands for destination, that is, the statue of Simón Bolívar points towards a physical destination around the beach. On the other hand, caracas officially Santiago de León de Caracas, is the capital and largest city of Venezuela, a south american country.

¿Se viaja mucho desde aquí para ir a la playa?

Here the correct option we need to choose is also para because this sentence also stands for destination. So in this question we want to know how long it takes to go from here to the beach, that is, the time it takes to go from a point A to a point B. So it is possible this could take a long time or a short time.

No, no mucho, pero para viajar a la playa debemos terminar de estudiar. Aquí hay mucha gente en la plaza.

This sentence also stands for destination, so we would choose para as well From this context, we know that it takes a short time to go from here to the  beach. Moreover, from the context we know that the mentioned point A is a place near a square and point B is the beach, the place they want to go.

¿Para qué Charlie?

We can know that this is the correct answer only if we take a look in the next item, that is, it provides the context of the dialogue. So here para stands for goal, that is, it talks about goals and purposes. So he asks for the reason they are in this place.

¡Para comer antes de toda esa gente!

So here the context is clear, that is, the purpose of the previous question ¿Para qué Charlie?  (Why Charlie?) is answered here with an exclamation ¡Para comer antes de toda esa gente! Accordingly, the purpose is for them to eat before all the people.

Con tanta gente creo que es buena idea irnos pronto por un café.  

Here we need to use the preposition por. To say ir por un café is common in Spanish. In fact, it is always common to say To get something, therefore, we can say:

Ir por un helado (ice cream)

Ir por unos tragos (to get drinks)

¡Yo vine a la plaza para ver la estatua de Bolívar y para probar arepas!

always in school geography and mathematics.

( i don't know what exactly this means but i translated it : d )