Final answer:
The nurse would document gravida 1, para 1. Gravida refers to the number of pregnancies and para refers to the number of pregnancies that have progressed to a viable gestational age.
Step-by-step explanation:
The nurse would document:
a. Gravida 1, para 1
A gravida is a woman who is pregnant, and para refers to the number of pregnancies that have progressed to a viable gestational age (usually 20 weeks or more). In this case, the client is pregnant with triplets, but has only given birth to one child at 39 weeks' gestation previously. Therefore, she is a gravida of 1 (since it is her first pregnancy) and a para of 1 (since she has one child who was born at 39 weeks)