Correct Answer: A

Rationale: Spinach is a suitable choice to recommend for increasing calcium intake to a client with lactose intolerance. Spinach is a good non-dairy source of calcium. Peanut butter, ground beef, and carrots are not significant sources of calcium. Peanut butter is high in protein and fats, ground beef is a source of protein and iron, and carrots are rich in vitamin A and fiber, but none of these choices provide a substantial amount of calcium.

Correct Answer: A

Rationale: The correct answer is A: Recent blood transfusion. A recent blood transfusion can interfere with the effectiveness of the MMR vaccine, making it a contraindication. Choice B, allergy to penicillin, is not a contraindication for the MMR vaccine. Choice C, minor acute illness, is not a contraindication unless the child has a moderate to severe illness. Choice D, low-grade fever, is not a contraindication as long as the child does not have a moderate to severe febrile illness.

Correct Answer: B

Rationale: The nurse should wear a dosimeter badge to monitor radiation exposure when caring for a client with a sealed radiation implant.

Correct Answer: C

Rationale: Montelukast is a leukotriene receptor antagonist that helps reduce swelling and mucus production in the airways, making it useful for long-term asthma management.

Correct Answer: A

Rationale: Using Naegele's rule, to calculate the expected delivery date, you add one year, subtract three months, and add seven days to the first day of the last menstrual period. If the last menstrual period was in October, adding one year gives October of the following year. Subtracting three months gives July, and adding seven days gives the expected delivery date of July 11th. Therefore, the correct answer is 711. Choice B (1011) is incorrect as it doesn't follow Naegele's rule calculations. Choices C (411) and D (1211) are also incorrect as they do not align with the correct application of Naegele's rule.