Which of the following radioisotopes is formed when 
emits a positron?
Definitions:
Qualitative Research
Research that is somewhat less structured than quantitative research but that allows more depth of interpretation and nuance in what people say and do.
Participant Observation
A research method in which researchers immerse themselves in the group or setting being studied, directly observing and participating in its activities.
Ethnography
A qualitative research method that studies cultures and communities through close observation, participation, and interviews.
Controlled Experiment
A scientific study where one variable is changed at a time to isolate the effects of that variable, providing strong evidence for a cause and effect.
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