2
Answer: BSet 2: Command of Evidence
Explanation
PASSAGE
The graph shows the global adult literacy rate from 1900 to 2020. Literacy rates have been a key indicator of educational development worldwide.
Based on the graph, what trend does the global literacy rate show over the 120-year period?
A. A steady decrease from 80% to 20%
B. A consistent increase from about 20% to nearly 90%✓ Correct
C. A flat line remaining at 50%
D. A sharp decline after 1980
Detailed Explanation
The line graph shows a clear upward trend, starting at approximately 20% in 1900 and rising steadily to about 87% by 2020.
Why others are wrong: A (The line increases, not decreases.), C (The line clearly rises over time.), D (There is no decline; the rate continues rising.).