Question

which sources would be most useful in exploring the issue of higher education costs?
□ plans of action

□ graphs and charts

□ personal stories

□ opening statements

□ past social policies

Explanation:

To explore higher education costs, graphs and charts can present statistical data (e.g., tuition trends, cost breakdowns) clearly. Past social policies may show how policy decisions impacted education funding/costs. Plans of action are more about solutions, personal stories are anecdotal, and opening statements are introductory. So graphs and charts, past social policies are useful, but if choosing the most probable single (or among these, graphs and charts for data visualization of costs, past social policies for policy - related cost impacts. But for the options, let's analyze:

• Plans of action: Focus on solving, not exploring the issue's details.
• Graphs and charts: Can display numerical data on costs (e.g., tuition over years, cost of different programs), very useful for exploration.
• Personal stories: Anecdotal, not as comprehensive for the issue.
• Opening statements: Introductory, not detailed.
• Past social policies: Can show how policies (like funding cuts, grants) affected higher education costs, useful for exploration.

If we have to pick the most useful among these, graphs and charts (for data - driven exploration) and past social policies (for policy - related exploration) are strong. But maybe the intended answer is graphs and charts (for visualizing cost data) or past social policies (for policy impact). But let's check again. For exploring the issue (understanding the costs), graphs and charts with data on costs, enrollment, etc., and past social policies that influenced funding (thus costs) are useful. However, if we have to choose one, graphs and charts can provide direct numerical insights into the cost issue.

Answer:

B. graphs and charts, E. past social policies (If multiple answers are allowed. If single, graphs and charts is a strong candidate as it can visually represent cost - related data to explore the issue.)

(Note: Depending on the question's expectation of single or multiple answers. If single, graphs and charts is very useful for exploring the numerical aspects of higher education costs. If multiple, both graphs and charts (data) and past social policies (policy impact) are useful.)