Final answer:
The patient's gestational age, based on the last menstrual period, is 36 weeks and 4 days, which is reflected in the emergency department report.
Step-by-step explanation:
The patient's current gestational age is 36 weeks and 4 days, as stated in the emergency department report. This age is based on the last menstrual period (LMP) which is a common method used to determine gestational age in obstetrics. A full-term pregnancy lasts approximately 270 days or about 38.5 weeks from conception, but obstetricians typically set the due date as 284 days (or about 40.5 weeks) from LMP, assuming conception occurred around day 14 of a woman's cycle. Thus, the correct answer to the student's question is c) 36 weeks and 4 days.