For each statement there are four different sentences given below it. Pick out the one that most appropriately conveys the meaning of the statement.
Unless they reverse present policies immediately, the world may suffer irreversible damage from the unregulated use of Bio weapons.
Unless they reverse present policies immediately, the world may suffer irreversible damage from the unregulated use of Bio weapons.
Unless present policies are reversed immediately, the world may suffer irreversible damage from the unregulated use of Bio weapons.
Unless present policies are reversed, the world may suffer irreversible damage by the unregulated use of Bio weapons.
Unless present policies are reversed, the world may suffer irreversible damage through the unregulated use of Bio weapons.
Correct Answer :
B. Unless present policies are reversed immediately, the world may suffer irreversible damage from the unregulated use of Bio weapons.
Choice (a) suffers from the use of the ambiguous pronoun they. Choices (c) and (d) are correct grammatically but they change the message by dropping the word immediately.