The following diseases are associated with sensitivity to radiation EXCEPT

Correct Answer: B

Rationale: Gardner syndrome does not typically increase radiation sensitivity, whereas the other conditions involve DNA repair defects or chromosomal instability.

Correct Answer: C

Rationale: Negativism, or oppositional behavior, is common in younger children due to developmental stages or frustration. Immaturity or fearfulness might also play a role, but negativism best fits the context.

Correct Answer: C

Rationale: The prevalence of mental health issues in childhood is generally estimated to be around 30%. This figure reflects the significant number of children who experience some form of mental health challenge during their development.

Correct Answer: B

Rationale: Oxygen saturation (SpOâ‚‚) refers to the percentage of hemoglobin molecules bound to oxygen. A saturation of 90% indicates that 90% of hemoglobin is oxygenated, which corresponds to a PaOâ‚‚ of around 60 mmHg, suggesting mild hypoxemia.

Correct Answer: A

Rationale: Hypomanic episodes are associated with bipolar disorder, not major depressive episodes. Depressed mood, loss of interest, and significant weight loss are core criteria for major depression.