Answer:
1. D (Certain)
2. A (Certain)
3. C (Most-Likely)
4. A (Certain)
Step-by-step explanation:
For question 3, I chose B because I crossed out the answers that could not have been it. It could not have been A or D so that only leaves B and C. I'm leaning more towards C because studies weren't mentioned that rejected the birth-order effect.
For question 4, I chose A because Harris states, "She believes that much of the research on birth order has been poorly designed and does not take into account the participants' socioeconomic status, the IQ scores of the participants' parents, or the size of their families." This piece of evidence is important because it shows what she says about the research studies.