Question 1
Why are recessive sex-linked conditions much more common in men than in women?
The right answer is the one marked above.
A man has only one X chromosome, so a single recessive allele is unopposed. A woman needs the recessive allele on both her X chromosomes before it shows; a man needs it once.
Nothing about dominance has changed. There is simply no second allele for a dominant one to be dominant over.