**Core Concept**
Vitamin B6 (pyridoxine) plays a crucial role in the development and function of the nervous system. A deficiency in pyridoxine can lead to neurological complications, including seizures in newborns.

**Why the Correct Answer is Right**
Pyridoxine is essential for the synthesis of neurotransmitters, such as GABA and serotonin, which regulate neuronal excitability. A deficiency in pyridoxine can disrupt this balance, leading to seizures. This is particularly concerning in newborns, as their developing brains are more susceptible to changes in neurotransmitter levels. The condition is often referred to as pyridoxine-dependent epilepsy.

**Why Each Wrong Option is Incorrect**
**Option A:** Folate deficiency can lead to megaloblastic anemia and neurological symptoms, but it is not directly associated with neonatal seizures.
**Option B:** Vitamin B12 deficiency can cause neurological symptoms, including numbness and weakness, but it is not typically linked to neonatal seizures.
**Option C:** Vitamin E deficiency can cause neurological symptoms, including ataxia and weakness, but it is not directly associated with neonatal seizures.

**Clinical Pearl / High-Yield Fact**
Pyridoxine-dependent epilepsy is a rare but treatable condition. Newborns with recurrent seizures should be screened for pyridoxine deficiency, as early treatment can significantly improve outcomes.

**Correct Answer:** B. Vitamin B6 deficiency