Respuesta :
I think it could be prepositional phrase because it has a preposition and its object.
- A prepositional phrase is one in wich there is a preposition and an object (Sometimes the object can be preceded by an adjective)
For example:
The dogs run through the garden. (In this case the preposition "through" is followed by the object "the garden")
- A infinitive phrase is one in wich there is a verb in infinitive form plus complement or modifiers.
For example:
Dogs like to run every morning (In this case "to run" is the verb in infinitive)
- The sentence "many go TO THE LIBRARY to find rare magazines and academic journals" is an indefinite phrase, for it has a verb in infinitive (TO FIND) and not a preposition with its object.