1. A researcher who tells how he or she
collects and analyzes data is using
methods.
O A. empirical
O B. operational
O C. provisional
O D. transparent

D

Explanation: A researcher who collects and analyses data uses the transparent method of research. With this method of conducting research , the researcher is fully involved in the process designing the research project and the research inquiry is designed to serve the subjects or people studied.

Transparency in research aims at promoting values in openness especislly among sciences.

Collecting and analysing data accurately helps on follow up research by other researchers which eases interpretation of data or results by the entire community .

explanation:

it refers to the definition of full-contact sports, where the condition is that the sport must have athletes must "purposely collide with each other

the positive connotations of the words "pretty," "quiet," and "silence" give the excerpt a tone of nervousness. i think its this