What does tuberous sclerosis primarily cause in affected individuals?

Tuberous sclerosis primarily causes tumors in multiple body systems due to a genetic mutation. This condition is characterized by the development of benign tumors, known as tubers, which can occur in various organs such as the brain, kidneys, heart, lungs, and skin. These tumors can lead to a range of complications depending on their size and location, affecting the functioning of the affected organs. The growth of these tumors is a direct result of the disorder and is a defining characteristic of tuberous sclerosis, making option C the most accurate choice regarding the primary effects of the condition.

Understanding this condition's multifaceted nature is crucial, as it highlights the need for comprehensive medical management and early intervention to address the symptoms that may arise from the tumors.