Secondary hypertension results from renal, endocrine, or vascular disorders.

• A. It is primarily caused by lifestyle factors with no organ involvement.
• B. Renal, endocrine, or vascular disorders are typical causes.
• C. It occurs exclusively in children.
• D. It is prevented by hydration alone.

Answer: (B)

Secondary hypertension happens when high blood pressure is driven by another medical condition. When the underlying issue involves the kidneys, the endocrine system, or the blood vessels, these disorders can raise blood pressure through mechanisms like excess fluid retention, overactivation of the renin-angiotensin-aldosterone system, or vascular changes. So, the statement that renal, endocrine, or vascular disorders are typical causes aligns with how secondary hypertension arises, making it the accurate description.

In contrast, attributing hypertension mainly to lifestyle factors describes primary (essential) hypertension, which isn’t caused by a specific organ problem. It also isn’t limited to children—hypertension affects adults too. And preventing hypertension by hydration alone is not accurate, since water intake alone doesn’t address the underlying organ-related mechanisms or the often multifactorial nature of blood pressure regulation.