Question

industrial and agricultural output (in millions of tons)
1913 1921 1928
coal 29.0 9.0 35.0
grain 80.0 37.6 73.3
iron and steel 8.5 0.3 7.3
the chart shows that output for iron and steel increased about 400% between 1921 and 1928.
the chart shows that output for all three products dropdown between 1913 and 1921.
dropdown options: increased significantly, increased slightly, declined significantly

Explanation:

To determine the trend of output for all three products (Coal, Grain, Iron and steel) between 1913 and 1921, we analyze the values:

• Coal: 1913 = 29.0, 1921 = 9.0 (decrease from 29.0 to 9.0).
• Grain: 1913 = 80.0, 1921 = 37.6 (decrease from 80.0 to 37.6).
• Iron and steel: 1913 = 8.5, 1921 = 0.3 (decrease from 8.5 to 0.3).

All three products show a large drop in output. Among the options, “declined significantly” matches this trend (since “increased significantly”/“slightly” are incorrect, as values decreased).

Answer:

declined significantly