While Reading an Advertisement in the Paper, You Notice That

Multiple Choice

While reading an advertisement in the paper, you notice that the local hospital is looking for participants in a research study. They are looking for people who have knee pain. The advertisement states that if the person has had knee surgery of any type within the past six months that they will not be considered for participation. Which of the following is considered the inclusion criteria for this study?

A) Knee pain
B) Knee pain and knee surgery
C) Knee surgery
D) Absence of knee pain and absence of knee surgery