A scientific-method question asks how the experiment was built: what changed, what was measured, what was held still, why a control existed. Design as a broader topic is in experimental design.
The four labels
Independent versus dependent is in independent versus dependent variables. Controls are in control groups.
You usually do not need the graph for these. The intro or the methods sentence is enough, in when there is no locator.
The bottom line
What they changed, what they measured, what they left alone. That is the method.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
This article offers general ACT prep guidance. The ACT can change from year to year, including its format, scoring, policies, test dates, and fees, so always confirm the latest details on the official ACT website at act.org before you make decisions. ACT® is a registered trademark of ACT, Inc. thirty-six is not affiliated with, endorsed by, or sponsored by ACT.