The students in Puerto Rico often reached the schools they are in through walking. So, the answer to the question above is letter A. They do this often as some of the schools are accessible this way. It is also said that walking around towns in Puerto Rico is quite safe.
I believe the answer is: Case study
Case study refers to a form of research that includes in-depth and detailed examination toward a certain subject study as its method of collecting data. Case study is the type of research that's the most popular by researchers in formal work background/ settings.
Could you maybe write it in english so i can help ?
The Black Death was a huge plague spread by Rats that was very contagious, it devastated Europe and killed many people, once it was done away with new tides turned and new foot holds of power proceeded forward due to knew tech, and different method of thinking.
