**Core Concept**
Conn's syndrome, also known as primary aldosteronism, is a condition characterized by excessive production of aldosterone, a mineralocorticoid hormone produced by the adrenal cortex. This leads to hypertension, hypokalemia, and metabolic alkalosis due to the sodium-retaining and potassium-losing effects of aldosterone.

**Why the Correct Answer is Right**
The correct answer is associated with Conn's syndrome because it is a direct consequence of the pathophysiology of the condition. Aldosterone excess leads to sodium retention and water retention, causing hypertension. Additionally, the loss of potassium due to aldosterone leads to hypokalemia. The metabolic alkalosis is a result of the increased hydrogen ion excretion in the urine and decreased hydrogen ion production in the kidneys.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a direct consequence of Conn's syndrome. While it is true that Conn's syndrome can lead to hypertension, which is a risk factor for cardiovascular disease, it is not a direct association.
**Option B:** This option is incorrect because Conn's syndrome is not typically associated with anemia. While patients with Conn's syndrome may experience symptoms such as weakness and fatigue due to hypokalemia, anemia is not a characteristic feature of the condition.
**Option C:** This option is incorrect because Conn's syndrome is not typically associated with hypocalcemia. While patients with Conn's syndrome may experience symptoms such as weakness and fatigue due to hypokalemia, hypocalcemia is not a characteristic feature of the condition.

**Clinical Pearl / High-Yield Fact**
One key feature of Conn's syndrome is the suppression of renin and angiotensin levels, which is a result of the negative feedback mechanism on the renin-angiotensin-aldosterone system. This suppression can make it challenging to diagnose Conn's syndrome using plasma renin activity (PRA) levels alone.

**Correct Answer: B. Anemia. Hypokalemia is a common feature of Conn's syndrome.