Which of the following is a function of the immune system?

Correct Answer: C

Rationale: The correct answer is C because the immune system's main function is to protect the body against foreign substances and pathogens. It does this by identifying and neutralizing harmful invaders to maintain the body's health. A, B, and D are incorrect because maintaining blood sugar levels is primarily regulated by the endocrine system, regulating hormone production is done by the endocrine system, and body temperature regulation is controlled by the nervous system and endocrine system, not the immune system.

Correct Answer: A

Rationale: The correct answer is A: 6 months. Nursing assistants typically must take the state test within 6 months after completing their training to become certified. This timeframe ensures that they have recently acquired the necessary knowledge and skills to pass the test. Choices B, C, and D are incorrect because waiting longer periods could result in the nursing assistant forgetting crucial information or skills, reducing their chances of passing the test. Additionally, delaying the test could hinder the assistant's ability to start working in the field promptly.

Correct Answer: C

Rationale: Step 1: A living will is a legal document that outlines a person's preferences for medical treatment in case they are unable to communicate their wishes. Step 2: Choice C states that a living will states the medical care a resident wants or does not want if they become unable to make decisions, which aligns with the definition. Step 3: Choice A is incorrect because a living will does not pertain to the distribution of a large estate upon death. Step 4: Choice B is incorrect as a living will is not related to a resident's inheritance wishes but rather their medical care preferences. Step 5: Choice D is incorrect as a living will does not address financial affairs but focuses solely on medical treatment preferences. Summary: The correct answer, Choice C, accurately describes the purpose of a living will in outlining medical care preferences, making it distinct from the other choices that are unrelated to its intended use.

Correct Answer: D

Rationale: The correct answer is D: Tachy in tachycardia. A prefix is a group of letters attached to the beginning of a word to change its meaning. In this case, "tachy-" means fast or rapid. In tachycardia, "tachy-" is added to "cardia" to indicate a fast heart rate. Choices A, B, and C all contain word parts, but they are not prefixes. "Scope," "logy," and "ostomy" are all word roots or suffixes, as they do not change the meaning of the word when attached to other words.

Correct Answer: A

Rationale: The correct answer is A: Social development. School-age children's development includes forming relationships, understanding social norms, and developing communication skills. This is crucial for their emotional well-being and success in school. Pregnancy (B) is not relevant to school-age children. Learning to walk correctly (C) is typically achieved during infancy. Controlling bowels and bladders (D) is part of early childhood development, not specific to school-age children. Thus, A is the correct answer.