Correct Answer: D

Rationale: The correct answer is D - 'overcrowding and its effect.' While overcrowding is an important topic, it will be given least priority compared to the other choices when conducting health education sessions for a group of mothers. Proper selection and preparation of food (Choice A) is crucial for ensuring adequate nutrition, handwashing before preparing food (Choice B) is essential for preventing foodborne illnesses, and cutting children's fingernails short (Choice C) is important for maintaining good hygiene. Overcrowding, although significant in the context of public health, might be considered less immediately relevant for a group of mothers in a health education session focused on more direct and practical aspects of family health and hygiene.

Correct Answer: B

Rationale: The best teaching method for the nurse in this scenario is to determine the foods most often eaten by the group and discuss the nutritional panel of each product. This approach directly educates the seniors about the fat content in the foods they commonly consume, making the information more relevant and applicable to their daily lives. Choice A, displaying posters with foods, may not engage the seniors effectively or provide detailed information about fat content. Choice C, showing a movie about cooking with low-fat foods, may not address the specific fat content of the seniors' usual food choices. Choice D, asking seniors to bring foods for tasting and estimating fat content, could be subjective and less educational compared to discussing concrete nutritional information from food labels.

Correct Answer: D

Rationale: Encouraging the group to explore 'what if' scenarios based on the objections helps to maintain a positive and creative brainstorming atmosphere, while also validating the concerns raised by the nurse. Choice A is dismissive and does not address the issue at hand. Choice B suggests postponing judgment, which may not resolve the tension caused by the criticism. Choice C is complimentary but does not address the critical feedback provided by the nurse, missing an opportunity to turn objections into opportunities for further exploration.

Correct Answer: D

Rationale: Epidemiological studies are used by community health nurses to identify the health needs of a population. These studies involve investigating patterns, causes, and effects of health and disease conditions in defined populations. While health surveys, medical records, and patient interviews are valuable tools in healthcare, epidemiological studies provide a broader population-based perspective essential for understanding and addressing community health needs.

Correct Answer: C

Rationale: Hyperoxygenating the client before and after suctioning helps prevent hypoxia by ensuring adequate oxygen levels during the procedure, which briefly interrupts the client's normal breathing pattern. Choice A is incorrect because inserting a fenestrated catheter with a whistle tip without suction would not prevent hypoxia. Choice B is incorrect as completing the suction pass in 30 seconds with a pressure of 150 mm Hg may lead to hypoxia. Choice D is incorrect as minimizing the suction pass to 60 seconds may not provide enough time for effective suctioning and could lead to hypoxia.