The sentence estudio para el examen and la biblioteca are related because you can study for an exam at the library (which is the meaning of the Spanish sentences).
This is part of an exercise where you have to select where the situations described in Spanish can happen, like the one named before.
This is the rest of the exercise that I was able to find online:
Check more information in the following link https://brainly.com/question/24791581?referrer=searchResults