Correct Answer: B

Rationale: The correct answer is B (2, 4, 1, 3, 5) because it follows the correct sequential order for initiating feeding. First, you need to prepare the food (2), then set up the feeding area (4), followed by inviting the person to eat (1), serving the food (3), and finally allowing them to eat (5). The other choices do not adhere to the logical sequence required for initiating feeding. Choice A and D have incorrect sequences of steps, while Choice C has steps 1 and 4 switched, which disrupts the proper order of initiating feeding.

Correct Answer: B

Rationale: The correct answer is B: Malignant cells contain proteins called tumor-specific antigens. Tumor-specific antigens are unique to cancer cells and are not found in normal cells. This characteristic distinguishes cancer cells from normal cells and is important in cancer detection and treatment. A: Malignant cells do not necessarily contain more fibronectin than normal body cells. Fibronectin is a glycoprotein found in the extracellular matrix and is not a defining characteristic of cancer cells. C: Chromosomes in cancer cells are actually more prone to instability and mutations compared to normal cells, making them less durable and stable. D: The nuclei of cancer cells can vary in size and shape, with irregularities often seen, rather than being unusually large and regularly shaped.

Correct Answer: A

Rationale: The correct answer is A: Wear a medical identification bracelet. This is important because in case of an emergency, such as an allergic reaction, medical professionals need to be aware of the child's severe food allergy quickly. The bracelet provides crucial information that can help in providing timely and appropriate medical care. B: Knowing how to use the antihistamine pen is also important in managing allergic reactions, but wearing a medical identification bracelet takes precedence as it provides immediate identification of the allergy. C: Knowing how to give injections of lidocaine is not relevant to managing a food allergy in a child. D: Avoiding live attenuated vaccinations may be necessary for individuals with certain allergies, but it is not directly related to educating parents about managing the child's food allergy.

Correct Answer: A

Rationale: The correct answer is A: Limit fluid and caffeine intake before bed. This recommendation addresses the issue of nocturia (frequent urination at night) by reducing the amount of urine produced before bedtime, therefore decreasing the need to get up during the night. Caffeine is a diuretic, so limiting its intake can also help reduce the frequency of urination. Choices B, C, and D do not directly address the underlying cause of nocturia and falling. Leaving the bathroom light on (choice B) may help with visibility but does not address the urinary problem. Kegel exercises (choice C) focus on pelvic floor muscles, not bladder muscles. Clearing the path to the bathroom (choice D) can prevent falls but does not address the urinary issue.

Correct Answer: B

Rationale: The correct answer is B: Contraction of bronchial smooth muscle. Histamine release can lead to bronchoconstriction, which narrows the airways and causes difficulty in breathing. This is a common symptom in allergic reactions like asthma. Constriction of small venules (Choice A) is not a typical consequence of histamine release. Dilation of large blood vessels (Choice C) is more associated with histamine's role in increasing vascular permeability. Decreased secretions from gastric and mucosal cells (Choice D) is not directly related to histamine's effects on smooth muscle contraction.