The most common cause of pleural effusion in children is:

Correct Answer: A

Rationale: Bacterial pneumonia is the leading cause of pleural effusion in children. Parapneumonic effusions develop as a complication of pneumonia due to inflammation and exudate accumulation in the pleural space.

Correct Answer: D

Rationale: Income inequality often leads to higher crime rates as individuals in lower-income brackets may resort to illegal activities due to lack of resources.

Correct Answer: B

Rationale: Anaphylaxis should be suspected in sudden collapse with cutaneous signs, especially after allergen exposure.

Correct Answer: A

Rationale: Digitalization raises significant concerns about data privacy, as personal information is increasingly stored and transmitted electronically.

Correct Answer: D

Rationale: Lobar pneumonia causes consolidation, which leads to dullness on percussion rather than hyper-resonance. Other findings include bronchial breath sounds, crepitations, and increased vocal resonance.