University of Texas students were fitted with electronically activated recorders for up to four days so that researchers could sample their daily activities. The researchers employed a scientific method known as.

Naturalistic observation

Explanation: Naturalistic observation involves observing or studying subjects of an experimental research in their natural environment. The subjects are observed without any influence or manipulation by the observer.

The use of electronically fitted activated recorders on Texas students as stated above, exemplifies a Naturalistic observation technique whereby the recording or data were obtained from the natural habitat of the student that is without creating a special setting or influence by the observer. Naturalistic observation could be employed where traditional way of data collection are unrealistic or for credibility sake.

the answer is a. or c.