Final answer:
The student's question involves understanding target populations and survey sampling in a social studies context. Least likely to be targeted for bullying is the captain of the football team, and a representative sample is vital for accurate survey results. Economically underdeveloped countries typically have a greater proportion of young individuals.
Step-by-step explanation:
The student's question appears to be related to social studies, specifically focusing on the concepts of target population, bullying, and survey sampling. To clarify the ambiguity in the original question, looking at the provided reference material, it seems that the question aims to address who is least likely to be targeted for bullying or how a representative sample is chosen for a survey. Based on the information given, the captain of the football team (d) is least likely to be targeted for bullying, due to factors like high social status and physical prowess.
When referring to survey sampling, the success of a study significantly depends on how well the sample represents the population. A representative sample (b) is crucial for accurate results. For example, to determine the proportion of children using a public library, the librarian might record whether books are checked out by an adult or a child for every fourth patron.
Regarding the countries with the highest proportion of young individuals, economically underdeveloped countries (b) typically have a greater proportion of young individuals due to higher birth rates and lower life expectancy, in contrast to economically developed countries or those with zero population growth.