Correct Answer: B

Rationale: The correct answer is B: Chickenpox. Chickenpox is highly infectious and is transmitted through direct contact, droplet spread, and contaminated objects. Due to its high communicability, strict isolation of the patient is necessary to prevent the spread of the disease. Mumps is primarily transmitted through direct contact with the infected person's saliva, with peak contagiousness before the onset of swelling. Exanthema subitum (roseola) has an unknown transmission source. Erythema infectiosum (fifth disease) is contagious before the appearance of symptoms. Therefore, these diseases do not require the same level of strict isolation as chickenpox.

Correct Answer: D

Rationale: The level of ongoing family conflict is the most significant factor influencing the positive or negative outcomes for children during and after a divorce

Correct Answer: B

Rationale: The correct answer is B: 'Occurs after a streptococcal infection.' Acute postinfectious glomerulonephritis often occurs after an infection with certain strains of streptococcus bacteria, specifically group A streptococcus. The body's immune response to the infection leads to inflammation and damage in the kidneys. Choices A, C, and D are incorrect because acute postinfectious glomerulonephritis is primarily associated with streptococcal infections, not urinary tract infections, renal vascular disorders, or E. coli.

Correct Answer: D

Rationale: Signs and symptoms are cues and clusters derived from patient assessments that are used to form a nursing diagnosis, guiding the development of a care plan.

Correct Answer: B

Rationale: The correct answer is B: Guided imagery. Guided imagery is an effective distraction technique for adolescents as it helps them focus on positive mental images instead of the pain. This technique can be a powerful tool in managing pain and anxiety during procedures. Blowing bubbles (choice A) may be more suitable for younger children as it can engage them visually and help distract them. EMLA cream (choice C) is a topical anesthetic and not a distraction technique. Sucrose solution (choice D) is used for pain relief in infants, not typically for adolescents undergoing painful procedures.