Which of the following sentences have the CORRECT usage of punctuation?
Across the valley, the researchers mapped wind patterns, the farmers soil moisture levels; and the students rainfall trends.
Across the valley the researchers mapped wind patterns, the farmers mapped soil moisture levels, and the students mapped rainfall trends.
Across the valley — the researchers mapped wind patterns, the farmers soil moisture levels, the students rainfall trends.
Across the valley, the researchers mapped wind patterns: the farmers soil moisture levels, the students rainfall trends.
Across the valley, the researchers mapped wind patterns; the farmers, soil moisture levels; the students rainfall trends.
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