How frequently do molar pregnancies occur?

Molar pregnancies occur with a frequency of about 1 in 1,500 to 2,000 pregnancies, making this the correct option. Molar pregnancies, which are a type of gestational trophoblastic disease, are characterized by abnormal growth of trophoblasts, the cells that normally develop into the placenta. The specific incidence can vary based on geographical location and maternal factors such as age and previous pregnancy history.

The frequency of occurrence in the chosen option aligns with clinical studies that track the prevalence of this condition. Understanding the expected incidence helps healthcare providers in counseling and monitoring patients appropriately.