What is the maximum recommended amount of screen time per day for 7-year-old children?

Correct Answer: A

Rationale: The correct answer is A: 2 hours. For 7-year-old children, the American Academy of Pediatrics recommends a maximum of 1-2 hours of screen time per day. Excessive screen time can lead to various negative impacts on children's physical and mental health, such as obesity, sleep problems, and behavioral issues. It is crucial for children to engage in other activities that promote physical exercise, social interaction, and cognitive development. Choices B, C, and D are incorrect because they exceed the recommended screen time limit and can potentially harm children's well-being.

Correct Answer: C

Rationale: The correct answer is C: Risk reduction activities. In a health risk appraisal, the CHN assesses factors contributing to health risks and develops strategies to reduce these risks. This includes identifying potential health hazards, vulnerabilities, and behaviors that may lead to health problems. Choice A, health promotion activities, focuses on promoting healthy behaviors rather than specifically assessing risks. Choice B, illness prevention activities, aims to prevent illnesses but doesn't necessarily assess overall health risks. Choice D, unhealthy events, is too broad and doesn't capture the comprehensive assessment of risks that a health risk appraisal entails.

Correct Answer: B

Rationale: The correct answer is B: An aggregate is a collection of individuals and families. This definition encompasses the idea that an aggregate consists of multiple components, including both individuals and families. It is broader than the other options as it includes both people and their immediate social units. A: "An aggregate is a large group" is too vague and lacks specificity compared to the correct definition. C: "An aggregate is a group within a population" is not as comprehensive as the correct definition, as it implies that an aggregate is a subset of the larger population without specifying the exact composition of the group. D: "An aggregate is another name for a demographic group" is incorrect because while demographics may be a part of an aggregate, it does not encompass the full scope of what an aggregate represents.

Correct Answer: C

Rationale: The correct answer is C: Passengers waiting at a bus stop. This choice represents a group in the community as it involves individuals gathered in a specific location for a common purpose, which is waiting for transportation. The key characteristics of a group in a community include shared location, common activity or goal, and interaction among members. In contrast, choices A, B, and D do not meet the criteria for a designated group in the community. Choice A involves individuals in an emergency room, which is a temporary setting for individual care. Choice B depicts shoppers in a mall elevator, which is a confined space for brief transit. Choice D refers to teens socializing on weekends, which is a vague description of a social activity without a specific community context. Therefore, choice C is the most appropriate as it aligns with the definition of a community group.

Correct Answer: D

Rationale: The correct answer is D: Commentator. This role involves tracking group process in writing and providing information to the group. A Coordinator focuses on organizing tasks, an Encourager offers positive reinforcement, and an Orienter sets the direction for the group. Commentator's role aligns closely with tracking and conveying information, making it the most suitable choice.