**Core Concept**
The spinal shock reflex recovery is a complex process involving the restoration of neural communication between the spinal cord and the brain. This phenomenon is characterized by the return of reflexes, particularly the **Babinski reflex**, which is a sensitive indicator of spinal cord function.

**Why the Correct Answer is Right**
The first reflex to recover after spinal shock is the **Babinski reflex**, also known as the **plantar reflex**. This reflex is mediated by the **lateral spinothalamic tract**, which is responsible for transmitting sensory information from the spinal cord to the brain. The recovery of the Babinski reflex indicates the regeneration of the **dorsal columns** and the **lateral spinothalamic tracts**, allowing for the return of sensory and motor functions.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not specified, making it impossible to evaluate.
* **Option B:** While the **ankle jerk reflex** is an important reflex, it is not the first to recover after spinal shock.
* **Option C:** The **abdominal reflex** is a useful indicator of spinal cord function, but it is not the first reflex to recover.

**Clinical Pearl / High-Yield Fact**
Remember that the recovery of reflexes after spinal shock follows a specific order: Babinski reflex, followed by the ankle jerk reflex, and then the abdominal reflex. This sequence is essential for assessing the level and extent of spinal cord injury.

**Correct Answer:** D. Babinski reflex.