Stats - Help!!!

Which is the best fertilizer for Mr. Jimenez’ backyard grass? Select the type of study most appropriate to the question.

A. Experimental
B. Experimental blinded
C. Case-controlled observational
D. Observational

an:C

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asked by Angela
  1. Disagree.

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    posted by PsyDAG
  2. a

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    posted by a

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