## **Core Concept**
The question pertains to common findings or characteristics observed in newborns, focusing on aspects that might be considered normal or expected. This includes physiological and anatomical features that are typically present at birth.

## **Why the Correct Answer is Right**
The correct answer, **D. Deep tendon reflexes**, is right because deep tendon reflexes are not typically elicited or considered a standard reflex in newborns due to their immature nervous system. Newborns do exhibit certain reflexes like the Moro reflex, rooting reflex, and sucking reflex, which are crucial for their immediate survival and adaptation.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Newborns commonly exhibit **acrocyanosis** (a bluish discoloration of the hands and feet), which is a normal finding due to the immaturity of the circulatory system and adaptation to extrauterine life.
- **Option B:** **Harlequin sign** (a reddish patch on the lower part of the body when the newborn is placed on its side) is a benign and common finding in newborns, related to the immaturity of the vascular system.
- **Option C:** **Erythema toxicum** (small, yellow or white bumps on the skin) is a very common, harmless condition in newborns, often appearing within the first few days of life.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that while certain reflexes and physical characteristics are expected in newborns, the absence or presence of deep tendon reflexes might not be as commonly assessed or considered a standard reflex at birth. Newborns have a range of normal physical and reflex findings that are critical for their immediate care and assessment.

## **Correct Answer:** D. Deep tendon reflexes.