Question

select the best answer for the question.
a student conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all.

1. based on the experiment in the scenario, which visual aid would be most helpful in showing the change in the plants heights over time?

a. a bar graph
b. a pie chart
c. a line graph
d. a timeline

Explanation:

To determine the best visual aid for showing the change in plants' heights over time, we analyze each option:

• A bar graph is good for comparing discrete categories (e.g., different plants' heights at a single time), but not for showing change over time.
• A pie chart is used to show proportions of a whole, which is not relevant here.
• A line graph is ideal for displaying data that changes over time, as it can show trends (e.g., how each plant's height increases or decreases over days/weeks).
• A timeline is used to show events in chronological order, not for tracking numerical changes like plant height.

Since we need to show the change in height over time, a line graph is the most appropriate.

Answer:

C. A line graph