**Core Concept**
Radiography involves the use of X-rays to produce images of internal body structures. Slice of tissue X-rays refers to the technique of taking X-ray images of thin sections of tissue, often used in medical research and pathology.

**Why the Correct Answer is Right**
The correct technique for slice of tissue X-rays is radiography using a microfocus X-ray source. This involves taking X-ray images of thin sections of tissue, typically using a microscope or a specialized X-ray imaging system. The microfocus X-ray source provides high-resolution images of the tissue structure, allowing for detailed analysis of the tissue's morphology and composition.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the type of X-ray source used, which is crucial for achieving high-resolution images.
**Option B:** This option is incorrect because it is too vague and does not provide any information about the technique or equipment used.
**Option C:** This option is incorrect because it refers to a different medical imaging modality altogether, which is not relevant to slice of tissue X-rays.

**Clinical Pearl / High-Yield Fact**
When performing slice of tissue X-rays, it is essential to use a microfocus X-ray source to achieve high-resolution images of the tissue structure. This can be particularly useful in medical research and pathology, where detailed analysis of tissue morphology and composition is critical.

**Correct Answer: C. Computed Tomography (CT) scan.