Select the correct passive form of the given sentence. |
To understand global warming and the ozone hole you need science. |
A) Science was needed to .understand global warming and the ozone hole.
B) Science has been needed to understand global warming and the ozone hole.
C) Science is being needed to understand global wanning and the ozone hole.
D) Science is needed to understand global warming and the ozone hole.
Correct Answer: D
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