**Core Concept:** The assessment and management of newborn infants in the immediate postnatal period is crucial for ensuring their survival and wellbeing. This includes early recognition and management of neonatal emergencies such as respiratory distress, hypothermia, and asphyxia. The correct sequence of steps during resuscitation should follow the ALABEM method:

1. Assess the environment and resources.
2. Prepare the newborn for resuscitation.
3. Establish a secure airway.
4. Apply gentle chest compressions.
5. Administer positive pressure ventilation.
6. Initiate advanced interventions (e.g., intubation, medications).

**Why the Correct Answer is Right:**

The correct first step in the resuscitation of this infant at delivery is not listed in the options provided, but I will explain the correct step and why the other options are incorrect.

**Why Option A is Incorrect:**
A. Checking the umbilical cord does not address the immediate life-saving steps required for the newborn in this situation. This step is important later in the process, but it should not be the first step.

**Why Option B is Incorrect:**
B. Administering oxygen is important, but the question suggests that the infant is apneic (unable to breathe on their own). Administering oxygen before establishing a secure airway would be inappropriate in this situation.

**Why Option C is Incorrect:**
C. Applying gentle chest compressions is not the first step in resuscitation. Before starting chest compressions, the newborn needs a secure airway to ensure effective ventilation.

**Why Option D is Incorrect:**
D. Administering medications is not the initial step in newborn resuscitation. Establishing a secure airway and providing effective ventilation are essential before considering medications.

**Why Option E is Incorrect:**
E. Establishing the newborn's heart rate is important, but it should be done after ensuring a secure airway and ventilation. Assessing heart rate alone is not sufficient in this situation.

**Why Option F is Incorrect:**
F. Checking the temperature is not the first step in newborn resuscitation. Evaluating the newborn's heart rate and breathing are more critical in this scenario.

**Why Option G is Incorrect:**
G. Assessing the newborn's color is not the initial step in newborn resuscitation. Evaluating the newborn's heart rate and breathing are more critical in this situation.

**Why Option H is Incorrect:**
H. Establishing the newborn's SpO2 (oxygen saturation) is not the first step in newborn resuscitation. Assessing the newborn's heart rate and breathing are more critical in this situation.

**Why Option I is Incorrect:**
I. Administering oxygen via face mask is not the first step in newborn resuscitation. Establishing a secure airway and providing effective ventilation are essential before considering oxygen therapy.

**Why Option J is Incorrect:**
J. Administering gentle chest compressions is not the first step in newborn resuscitation. Establishing a secure airway and providing effective ventilation are essential before considering any physical intervention.

**Why Option