**Core Concept**
The superficial perineal space is a fascial compartment located in the perineum, lying superficial to the superficial perineal fascia (Colles' fascia). This space contains structures that facilitate urination and sexual function.

**Why the Correct Answer is Right**
The superficial perineal space contains the superficial perineal muscles (superficial transverse perineal muscle and the bulbospongiosus muscle), the bulb of the penis in males, and the bulb of the vestibule in females. These structures are innervated by the perineal branch of the pudendal nerve. The superficial perineal fascia (Colles' fascia) envelops the space and extends from the pubic symphysis to the anal canal.

**Why Each Wrong Option is Incorrect**
**Option A:** The deep perineal space is located deeper than the superficial perineal space and contains different structures, including the deep transverse perineal muscle and the external urethral sphincter.
**Option B:** The ischiocavernosus muscle is actually located in the deep perineal space, not the superficial perineal space.
**Option C:** The bulbospongiosus muscle is indeed located in the superficial perineal space, making this option incorrect.

**Clinical Pearl / High-Yield Fact**
The superficial perineal fascia (Colles' fascia) is a fascial layer that extends from the pubic symphysis to the anal canal, enveloping the superficial perineal space. This fascia is often involved in perineal infections, such as perineal abscesses.

**Correct Answer: C. The ischiocavernosus muscle.**