Match the following:
| List-I (Variables) | List-II (Property) |
| A. Independent variable | 1. Physical characteristics of apparatus |
| B. Dependent variable | 2. Variable manipulated by experimenter |
| C. Task variable | 3. Variable recorded by experimenter |
| D. Extraneous variable | 4. Variable controlled by the experiment |
A. A-2, B-3, C-1, D-4
B. A-2, B-4, C-3, D-1
C. A-3, B-1, C-4, D-2
D. A-1, B-2, C-3, D-4
Answer: Option A

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