**Core Concept**
Apocrine glands are a type of sweat gland found in the armpits and genital area, responsible for producing a type of sweat that is high in protein and lipids. They are a key component of the body's thermoregulatory system and play a role in the development of body odor.

**Why the Correct Answer is Right**
Apocrine glands are unique in that they begin to develop during puberty and are under the influence of hormones, particularly androgens. They are also characterized by their apical secretion, where the secretory cells release their product at the apical end, which is distinct from eccrine glands. The apocrine secretion is high in protein and lipids, which makes it an ideal medium for bacterial growth, contributing to body odor.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not provide specific information about apocrine glands.
**Option B:** This option is incorrect as apocrine glands are not responsible for producing eccrine sweat.
**Option C:** This option is incorrect as apocrine glands are not found in the palms and soles.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that apocrine glands are primarily responsible for producing sweat in the armpits and genital area, which highlights the importance of proper hygiene in these regions to prevent body odor.

**Correct Answer:** D.