Answer:
d. Are concerned about non response bias among the controls
Explanation:
Participation incentive is an extrinsic motivator, it is a reward given to encourage participation of people for a certain thing, like a research in this case.
They are particularly useful when the desire to participate in the research for the sake of participating is weak.
From the question, being concerned about no response bias among the group used as control for the research is important because they were not given incentives for them to participate, where as incentives were given to the other group of people (eligible cases)
The answer to your question would be A. Missed Work
I think a parent's would communicate better with there kids as friends. because friends talk better with other friends because they are more open. As for kids and parent's they don't get along very well sometimes because the kid thinks the parent's are to bossy or whatever..etc.
Hope this helps
For a person born in 1900, the most likely cause of death were be to die from sickness. Heart disease is the leading cause, then comes cancer and then stroke.
For a person born in 2006, the most likely cause of death would be obtaining unintentional injury such as a car crash where their parent or someone were driving. The second leading cause of death is a tumor.