**Core Concept**
Osteogenic sarcoma, also known as osteosarcoma, is a type of malignant bone tumor that produces immature bone. The underlying pharmacological/physiological principle being tested is the understanding of bone pathology and tumor biology.

**Why the Correct Answer is Right**
The correct answer is related to the production of osteoid by malignant cells, which is a characteristic feature of osteosarcoma. Osteoid is the non-mineralized matrix of bone, and its presence is a hallmark of osteosarcoma. The tumor cells in osteosarcoma are capable of producing osteoid, which can be seen on histological examination.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specifically relate to the histological findings in osteosarcoma.
**Option B:** This option is also incorrect as it is not a characteristic feature of osteosarcoma.
**Option C:** This option is incorrect because it is more commonly associated with other types of bone tumors.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that osteosarcoma is the most common primary malignant bone tumor, and its diagnosis is often based on the presence of osteoid production by malignant cells.

**Correct Answer:** D. Production of osteoid by malignant cells.