The Latin word for "penis" means "tail."

Your text discussed a well-publicized study showing a positive correlation between young children sleeping with a nightlight and the children later becoming nearsighted to illustrate the point that:

a. correlations greater that +50.00 are easier to interpret than those less than +50.00 b. small changes in children's environments can often have substantial changes in children's preferences (e.g., whether they read just for fun) c. the same environmental stimuli that can have a large effect on children younger than 3 often have no effect on children older than 5. d. seemingly straightforward causal inferences of causation based on correlational data often prove to be wrong

At what point after conception can a pregnancy be confirmed through blood or urine testing?

the morning after conception 5–7 days after conception one month after the woman's last menstrual period after implantation