A student wrote this sentence: "It is now clear that policymakers must knew about the economic benefits of methane monitoring, yet chose not to act." Choose the corrected version.

Question

Answer

It is now clear that policymakers must know about the economic benefits of methane monitoring, yet chose not to act.

Answer

It is now clear that policymakers must had known about the economic benefits of methane monitoring, yet chose not to act.

Answer

It is now clear that policymakers must be knowing about the economic benefits of methane monitoring, yet chose not to act.

Answer

It is now clear that policymakers must have known about the economic benefits of methane monitoring, yet chose not to act.

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A student wrote this sentence: "It is now clear that policymakers must knew abou...

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