The line graph shows plant height (cm) over five days: 2, 4, 6, 9, 12. What is the trend?

• A. The plant height increases then decreases.
• B. The plant height increases each day; the trend shows growth over time.
• C. The plant height stays the same.
• D. The plant height fluctuates without a clear trend.

Answer: (B)

Line graphs track how something changes over time, and a steadily rising line indicates growth. Here, plant height increases every day—from 2 cm to 4 cm to 6 cm to 9 cm to 12 cm—so there are no decreases or plateaus. The overall pattern is a consistent upward trend, which means the plant is growing over time. The other descriptions would require the height to drop, stay the same, or vary without a clear direction, none of which match these data.