Ans key is (3). We thought it is (1)-A and D only. Can help to explain why B ? Thank you !
Source: Nanyang Primary
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Answer
darnocwee
prevent water already collected to be evaporated
SEBASTIANSIM
A beaker with smaller opening would mean bigger exposed surface area for the sea water to evaporate. More water vapour would condense onto the surface of the plastic hence more water would drip down into the beaker.