Carla noticed that most students got to the college around 8:00 am, and proposed that in order to get a good parking spot, a student would need to get to the college before 7:45 am. She decided to observe for a few weeks to see if she was right. This type of research is

field research

Explanation:

Field research is a type of research whereby the researcher studies, observes and interacts with people in their natural environment to understand how they behave and how they react to a situation. this is a qualitative form of data collection because the objects/humans understudy are in their natural environment and the researcher will get the best qualitative data by observing them there.

From the question, Carla has been observing the students rate and time of going to school and have observed the time to be (8: 00 am) and also was able to draw a conclusion from their response time to school which is : if one wants to get a good parking spot one should be in school earlier than the usual time most students come to school (7: 45 am).

This type of research is field research.

Explanation:

Field research is a qualitative method in which the researcher observes his/her subjects in their context. It aims to understand and interpret the subjects' behaviors and social interactions.

In this case, we can see that Carla is doing field research since, in order to test her hypothesis, she goes to the subjects' social context and observes in order to prove or rebuff it.