Which abbreviation represents both gravida and parity in obstetrics?

The correct answer is A, which represents gravida and parity through the abbreviation G/P/Ab. In obstetrics, these terms are fundamental for documenting a woman's reproductive history.

"Gravida" refers to the number of times a woman has been pregnant, regardless of the outcome, while "parity" indicates the number of pregnancies that have reached viability, which is typically considered to be 20 weeks of gestation or more. The abbreviation G/P/Ab includes not only gravida (the G) and parity (the P) but also "Ab," which stands for abortions, either spontaneous or elective. This comprehensive approach allows healthcare providers to quickly assess a patient's obstetric history, aiding in appropriate care and management.

The other options do not represent both gravida and parity in obstetrics. GI often refers to gastrointestinal in medical contexts, HA typically stands for headache or history assessment, and HPI stands for history of present illness, which does not capture the obstetric history's essential elements like gravida and parity. Thus, these other options do not pertain to the correct obstetric terminology in the way that G/P/Ab does.