Correct Answer: C

Rationale: The main goal of Healthy People 2010 is the elimination of health disparities among the U.S. population. This initiative outlines specific objectives to improve the overall health of Americans by addressing disparities in health outcomes. Choice A, reduction of health care costs, is not the primary goal of Healthy People 2010, although it may be a beneficial outcome. Choice C, investigation of substance abuse, is not a main goal of Healthy People 2010; while substance abuse may be a factor in health disparities, the primary focus is on broader disparities. Choice D, determination of an acceptable morbidity rate, is not the main focus of Healthy People 2010; instead, it aims to address health disparities in different population groups.

Correct Answer: A

Rationale: The correct answer is varicella. Varicella vaccine contains a live, weakened form of the varicella-zoster virus. Choice B, IPV (inactivated poliovirus vaccine), is an inactivated vaccine, not a live virus vaccine. Choices C and D, DTaP (diphtheria, tetanus, and acellular pertussis vaccine) and hepatitis B vaccine, respectively, do not contain live viruses. Varicella is the only live virus vaccine among the options.

Correct Answer: C

Rationale: When assessing language development in a toddler from a bilingual family, a nurse would expect the child's language development to be slower than expected. Various factors, such as physical maturity and reinforcement received, can influence the pace of language development. Children from bilingual families, twins, and non-firstborn children may exhibit slower language development. Therefore, it is common for the language development of a toddler from a bilingual family to be slower than expected. This characteristic does not necessarily imply a need for speech therapy. Choices A, B, and D are incorrect because, in this context, the language development of the child is more likely to be slower than expected rather than more advanced, developing as expected, or requiring speech therapy.

Correct Answer: D

Rationale: The correct answer is that using a condom during intercourse can reduce the risk of STI transmission. Abstinence is a way to prevent STIs, but not the only way. Using a spermicide along with a condom can help prevent pregnancy, not STIs. While condoms may fail to prevent pregnancy, they are effective in reducing the risk of STI transmission. Therefore, using a latex condom for pregnancy prevention is not directly related to preventing the transmission of STIs.

Correct Answer: B

Rationale: According to Erikson, the correct developmental task for a toddler who has developed 'a will of his own' and 'acts as if he can control others' is Autonomy versus doubt and shame. Toddlers at this stage are asserting their wills and realizing they can control others, which is part of developing autonomy. However, they may also experience doubt and shame if their assertiveness is met with disapproval. Trust versus mistrust is the developmental task of the infant, where the main focus is on developing trust in the caregiver. Initiative versus guilt is the developmental task of the preschool-age child, emphasizing the balance between taking initiative and feeling guilty. Industry versus inferiority is the developmental task of the school-age child, focusing on competence and self-esteem.