Question 32
Domain 2: Spanish Language ProficiencyWhich sentence uses the prepositions correctly according to standard Spanish usage?
Correct answer: B
Explanation
Use para to express purpose or destination, and use por to express cause, means, exchange, or movement through a place. — fcice_syllabus.txt
Why each option is right or wrong
A. Estudio por aprender español y salgo para el parque.
Para expresses purpose, and por commonly expresses movement through or around a place.
B. Estudio para aprender español y camino por el parque.
In this sentence, para correctly introduces the purpose of studying, and por correctly indicates movement through the park. Those uses match the contrast between purpose/destination and movement through a place.
C. Trabajo para mi amigo ayer y viajé para autobús.
Por commonly expresses agency or reason, and en or en autobús is used for transportation, not para.
D. Gracias para tu ayuda y lo hice para ti.
Por is used in expressions of cause such as gratitude, while para can mark intended recipient or beneficiary.