Until what point do most childbirth educators recommend that families with normal and healthy pregnancies stay home during labor? a) until contractions are one minute long and five minutes apart for at least one hour
b) until the cervix is fully dilated and/or the mother feels the urge to push
c) until contractions are usally 45-60 seconds long and 3-5 minutes apart
d) for 30 minutes to 2 hours, or until the cervix is dilated 8-10 cm​