Final answer:
Crop production is a significant agricultural activity, while probability sampling is not a subjective method.
Explanation:
Which of the following is an agricultural activity?
a. Crop production
b. Raising Cattle
c. Beekeeping
Probability sampling is a subjective method of selecting units for study.
a. True
From the given options, the correct answer would be 'a. Crop production' as it is a key agricultural activity. Probability sampling is false as it is an objective method used for selecting units for study.
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