The process not needed in experimental researches is
| A. | observation |
| B. | controlling |
| C. | manipulation and replication |
| D. | reference collection |
Answer : D Explanation : Reference collection is not needed in experimental studies because a researcher relies only on his own results which may be different from the previous studies |
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
