Which of the following would be considered a random sample of all adults in a...

A random sample ensures every individual in the population has an equal chance of selection. Option B (adults assigned a unique number, then numbers randomly drawn) achieves this by using a simple random sampling method, where each adult in the neighborhood is equally likely to be selected. The APA’sAICP Certification Exam Content Outline(2022), under “Research and Assessment Methods,” defines a random sample as “a method where each member of the population has an equal probability of selection, such as assigning numbers and randomly drawing them.” Option A (even side of streets) introduces bias by excluding half the population. Option C (households chosen at random) samples households, not adults, potentially skewing individual representation. Option D (questionnaire respondents) suffers from self-selection bias, as only those who respond are included. TheCPC Study Manual(2024) confirms, “Random sampling of adults is best achieved by assigning unique numbers and drawing them randomly,” supporting option B.