**Core Concept**
Intercalated discs are complex structures that connect cardiac myocytes (cardiac muscle cells) through gap junctions, adherens junctions, and desmosomes. They play a crucial role in maintaining the structural integrity and electrical conduction of the heart.

**Why the Correct Answer is Right**
The correct answer is a type of cardiac muscle tissue that has intercalated discs. These discs enable the rapid transmission of electrical impulses through gap junctions, allowing for coordinated contraction of the heart muscle. The presence of intercalated discs is a hallmark feature of cardiac muscle, distinguishing it from skeletal muscle.

**Why Each Wrong Option is Incorrect**
**Option A:** Striated muscle does not have intercalated discs. While it shares a similar striated appearance with cardiac muscle, it lacks the specialized junctions and discs found in cardiac tissue.

**Option B:** Smooth muscle does not have intercalated discs. Smooth muscle is characterized by its ability to contract without the striated pattern seen in cardiac and skeletal muscle.

**Option C:** This option is missing.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that cardiac muscle is unique in having intercalated discs, which enable its specialized function of rapid electrical conduction and coordinated contraction.

**Correct Answer:** C. Cardiac muscle.