Which of the following indicates a person's number of pregnancies, births, and miscarriages or abortions?

The notation G_P_A_ refers to a method commonly used in obstetrics to summarize a woman's reproductive history. The "G" stands for the total number of pregnancies, the "P" represents the number of pregnancies that resulted in a viable birth, and "A" indicates the number of pregnancies that ended in miscarriage or abortion. This shorthand provides a clear and concise way for healthcare providers to understand a patient's obstetric history quickly.

In contrast, the other terms indicated do not convey the same information. FHT stands for fetal heart tones, which refers to the sound of the heartbeat of a fetus. GIB can refer to gastrointestinal bleeding, while Fx typically denotes a fracture in medical terminology. None of these options communicate the specific details of a person’s reproductive history, making the first choice the most accurate in this context.