**Core Concept**
The paramesonephric ducts are embryological structures that develop into female reproductive organs, but in males, they regress and give rise to small remnants. Understanding the fate of these ducts is crucial for grasping the developmental origins of male reproductive anatomy.

**Why the Correct Answer is Right**
In males, the paramesonephric ducts degenerate and form small vestigial structures. The prostatic utricle is a small, blind-ending outpouching of the prostatic urethra, which represents the remnant of the paramesonephric duct. The prostatic utricle is located on the posterior wall of the prostatic urethra, adjacent to the verumontanum. This structure is a key landmark in the male urethra and is associated with the ejaculatory ducts.

**Why Each Wrong Option is Incorrect**
**Option B:** The prostatic urethra is the main part of the male urethra that passes through the prostate gland, but it is not a remnant of the paramesonephric duct.
**Option C:** The colliculus seminalis, also known as the verumontanum, is a prominent elevation on the posterior wall of the prostatic urethra that marks the opening of the ejaculatory ducts. It is not a remnant of the paramesonephric duct.
**Option D:** The ejaculatory ducts are paired structures that carry semen from the seminal vesicles to the prostatic urethra. They are not remnants of the paramesonephric duct.

**Clinical Pearl / High-Yield Fact**
It is essential to recognize the prostatic utricle as a small, inconspicuous structure on the posterior wall of the prostatic urethra. Failure to identify this landmark can lead to misdiagnosis or incomplete evaluation of the male urethra.

✓ Correct Answer: A. Prostatic utricle