**Core Concept**
Essential obstetric care refers to the minimum set of interventions necessary to ensure safe motherhood and reduce maternal and perinatal mortality. This includes antenatal care, skilled attendance at delivery, and postnatal care.

**Why the Correct Answer is Right**
Essential obstetric care does not include non-essential interventions, such as **elective cesarean sections** or **advanced maternal age screening**. These services are not considered essential because they do not directly impact maternal and perinatal mortality rates. In contrast, essential obstetric care focuses on interventions that have been proven to reduce mortality and morbidity, such as **antenatal tetanus toxoid vaccination**, **skilled attendance at delivery**, and **treatment of postpartum hemorrhage**.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because **antenatal care**, including routine check-ups and screening tests, is a crucial component of essential obstetric care.
**Option B:** This option is incorrect because **treatment of postpartum hemorrhage** is a critical intervention that is included in essential obstetric care.
**Option C:** This option is incorrect because **family planning counseling** is an essential component of reproductive healthcare, which is closely related to obstetric care.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that essential obstetric care is not a one-size-fits-all approach. The specific interventions included in essential obstetric care may vary depending on the country, region, or healthcare setting.

**Correct Answer: D.**