Which descriptive research technique is correctly matched with a key advantage? case study — permits examination of relationships among variables correlational method — examines behavior in its natural environment survey — allows data to be collected rapidly naturalistic observation — ideal for the examination of rare behaviors?

I believe the answer is: Survey- allows data to be collected rapidly

In a survey, the researchers could throw out a huge amount of questionaires to a lot of people from different segmentations and could obtain personalized answers even without having to supervise the process, which allow them to collect the data more rapidly.

all you really need to do is work on the punctuation and substitute some words to make it shorter