Correct Answer: D

Rationale: Fungi causing deep or systemic infections are commonly opportunistic, especially in immunocompromised individuals.

Correct Answer: B

Rationale: Liver function tests should be monitored during estradiol therapy due to the potential for liver dysfunction.

Correct Answer: C

Rationale: Immune insufficiency is a possible cause of recurring respiratory infections in a 5-month-old child.

Correct Answer: A

Rationale: Progestin-only contraceptives are preferred in women who are at increased risk of thromboembolic events, such as those with a history of blood clots.

Correct Answer: A

Rationale: Medroxyprogesterone should be taken at the same time each day to maintain consistent hormone levels and effectiveness in treating endometriosis.