According to Naegele's rule, how is the Expected Date of Delivery (EDD) calculated from the first day of the Last Menstrual Period (LMP)?

The primary benefit of maternal administration of glucocorticoids in preterm labour is to:

A nurse assessing a woman in active labor notes that the fetal head is the part entering the pelvic inlet first. The fetus has a flexed head with the occiput as the leading bony landmark. Which fetal presentation and denominator is most appropriate?