**Core Concept**
Increased intracranial tension (ICT) occurs when the pressure inside the skull exceeds the normal range, potentially leading to brain damage or herniation. This can result from various causes, including trauma, tumors, hemorrhages, or hydrocephalus.

**Why the Correct Answer is Right**
Signs of increased intracranial tension include headache, nausea, vomiting, and altered mental status. The Cushing's triad, a classic sign, consists of three key symptoms: increased blood pressure, irregular breathing, and reduced heart rate. These symptoms arise due to the brain's attempt to compensate for the increased pressure by constricting blood vessels and reducing cerebral perfusion.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.
**Option D:** This option is not provided.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that papilledema, which is the swelling of the optic disc due to increased ICT, is not always an immediate sign of elevated intracranial pressure. It may take several days to develop, making it a less sensitive diagnostic indicator in the initial stages of increased ICT.

**Correct Answer:**
**Correct Answer:** None of the above options are correct, as the question stem is incomplete.