Correct Answer: A

Rationale: The correct answer is A: Nonnormative. Nonnormative influences are events or experiences that are irregular and unique to the individual, so they do not follow a predictable timetable. These influences can include major life events like winning the lottery or experiencing a natural disaster, and they have a significant impact on a person's development. Choice B, History-graded influences, are events that are common to people of a particular generation due to historical circumstances. Choice C, Age-graded influences, are events that are typical for people of a certain age group. Choice D, Bio-historical, is not a recognized term in developmental psychology.

Correct Answer: B

Rationale: Ethical standards permit deception in research studies if investigators satisfy institutional review boards that such practices are necessary. Institutional review boards are responsible for ensuring that research studies comply with ethical guidelines and protect the welfare of study participants. Deception should only be used when necessary, and the board's approval indicates that safeguards are in place to minimize harm to participants. Choices A, C, and D are incorrect because ethical deception in research studies is not based on the age of participants, observing from behind mirrors, or obtaining informed consent without revealing the study's real purpose.

Correct Answer: B

Rationale: The correct answer is the third month of pregnancy (choice B). During the third month of pregnancy, which is around 9-12 weeks, a fetal heartbeat can typically be heard using a stethoscope. This is an exciting milestone for expectant parents as it provides reassurance about the baby's well-being. Choices A, C, and D are incorrect because by the fourth week of pregnancy, the fetal heartbeat is not usually detectable with a stethoscope. The end of the second trimester and the beginning of the third trimester are too late in the pregnancy timeline for this milestone.

Correct Answer: B

Rationale: The statement that is true about the Nurse-Family Partnership is that one of its goals is to promote competent early caregiving. The program provides support and guidance to first-time mothers to help them develop their caregiving skills and promote healthy child development. Choice A is incorrect because the program focuses on promoting healthy child development and supporting mothers, not specifically reducing the risk of teratogens. Choice C is incorrect because the Nurse-Family Partnership is not a series of childbirth classes but a program that involves home visits and support. Choice D is incorrect because the program's main focus is on supporting mothers in caregiving and child development, not primarily on family planning and genetic counseling.

Correct Answer: B

Rationale: The outermost level of Bronfenbrenner's model is the macrosystem. This level refers to the broader cultural context that shapes the values, laws, customs, and resources of a particular society. It includes factors such as ideology, political systems, societal norms, and cultural influences that impact development at all other levels within the model. Choice A, microsystem, refers to the immediate environment or setting in which an individual lives and interacts. Choice C, exosystem, involves settings that individuals do not directly experience but still influence them. Choice D, mesosystem, refers to the connections between various aspects of an individual's microsystem.