Answer:
C.
Explanation:
According to my investigations regarding online research, I can say that based on the information provided within the question the one statement that is completely true is that Online surveys generally have higher response rates than those conducted by mail or phone. Studies have shown that individuals are more inclined to answer surveys/questions when they are online. Usually because the individual is already engaged in surfing the web and does not mind clicking on a response as opposed to having to spend time on answering on the phone when they were currently engaged in another activity.
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