Learning disabilities in children have scientifically been linked to:

Correct Answer: C

Rationale: Learning disabilities have a strong genetic basis, with research showing hereditary patterns in conditions like dyslexia. While nutrition (A) and environment (B) can influence development, and TV (D) may affect attention, genetics (C) is the most scientifically established cause.

Correct Answer: A

Rationale: Routine screening for depression at every physician visit (A) aligns with guidelines to catch mental health issues early in adolescents, who may not self-report symptoms.

Correct Answer: B

Rationale: Separation anxiety (B) is prevalent in toddlers, who fear being apart from caregivers, aligning with their developmental stage. Test (A) and school (D) anxiety apply to older children, and situational (C) is less specific.

Correct Answer: C

Rationale: Intuniv (guanfacine) is a non-stimulant ADHD medication (C), acting on alpha-2 receptors, unlike the stimulants Ritalin, Vyvanse, and Adderall (A, B, D), which increase dopamine/norepinephrine.

Correct Answer: C

Rationale: Schizophrenia increases risk for depression and drug abuse (A, B) due to emotional and coping challenges. Renal (C) and cardiac (D) diseases aren’t directly linked, making C the exception.