Which-experiment items ask which setup produced the table or the result. Match the variable that changed. Science is optional and outside the Composite. Comparing two setups is in compare two experiments.
Who changed what
Study 1 might vary temperature. Study 2 might vary concentration. The stem names a result; go to the study that actually measured that variable. Independent versus dependent is in independent versus dependent variables.
Whether data support a claim is a neighbor, in supported or weakened. Experimental design is in experimental design.
The bottom line
The experiment that changed the named variable is the one that produced the result.
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