**Core Concept**
Schuller's view and Law's view are radiographic projections of the parotid gland, which are essential for diagnosing parotid gland pathology and tumors. These views utilize the natural anatomy of the skull and the position of the parotid gland to visualize the gland's structures.

**Why the Correct Answer is Right**
Schuller's view, also known as the occipitomental view, is taken with the X-ray beam directed from the occipital region to the mental region, allowing for visualization of the parotid gland's superficial lobe. Law's view, also known as the occipitofrontal view, is taken with the X-ray beam directed from the occipital region to the frontal region, allowing for visualization of the parotid gland's deep lobe. These views are essential for diagnosing parotid gland pathology, including tumors, cysts, and infections.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Schuller's view and Law's view are not used for visualizing the submandibular gland.
**Option B:** This option is incorrect because Schuller's view and Law's view are not used for visualizing the thyroid gland.
**Option C:** This option is incorrect because Schuller's view and Law's view are not used for visualizing the parotid gland's lymph nodes.

**Clinical Pearl / High-Yield Fact**
When interpreting radiographs of the parotid gland, it is essential to consider the patient's symptoms and medical history, as well as to look for signs of glandular enlargement, calcification, and soft tissue masses.

**Correct Answer:** D.