Answer:
how the secondary data were collected.
Explanation:
Secondary data refers to the data that is collected by other persons beside the researcher who actually use it. (in this context, it would be the data that is collected by other person than Marvin).
Sometimes, the collection method could influence the data given by the samples and will shaken up the overall conclusions.
I'll give you an example.
In market research, companies often conducts research to find out consumers' preference toward a certain product. This preference could be given by the people through either public survey and private survey. Most people tend to give a more truthful answer if the data is collected through private survey since answering in public survey makes the people fear a chance that they will be judged by others.
Physical, emotional, and mental harm to ones spouse is known as
D - Spousal abuse.
Answer: Secondary source
Explanation:
Secondary source could be defined as a source which still gains it's knowledge from the primary source. The secondary source has no first hand witness in the event but only narrates what they are being told or studied. The information from the museum tour guide who shows you around the exhibit and shares facts with you is a secondary guide based on they didn't witness the information first hand but were told or studied