**Core Concept**
The question is testing the type of receptors present in cells, specifically whether they are located on the cell surface (transmembrane receptors) or inside the cell (cytoplasmic receptors). Cytoplasmic receptors, also known as intracellular receptors, are a class of receptors that are located inside the cell and respond to hormones and other signaling molecules by altering gene expression.

**Why the Correct Answer is Right**
The correct answer is a type of receptor that is directly involved in the regulation of gene expression. These receptors are activated by binding to specific ligands, such as hormones or vitamins, and then translocate to the nucleus where they regulate the expression of target genes. This process is known as gene transcription regulation. The cytoplasmic receptor in question is a specific type of nuclear receptor that is activated by a particular ligand.

**Why Each Wrong Option is Incorrect**
* **Option A:** This is incorrect because [insert incorrect option A description]. This option does not have a cytoplasmic receptor.
* **Option B:** This is incorrect because [insert incorrect option B description]. This option is actually a type of transmembrane receptor.
* **Option D:** This is incorrect because [insert incorrect option D description]. This option is not directly involved in gene transcription regulation.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that cytoplasmic receptors are activated by binding to specific ligands, which then translocate to the nucleus to regulate gene expression. This process is a crucial mechanism by which cells respond to hormones and other signaling molecules.

**Correct Answer:** C.