13A majority of the international journalists surveyed view nuclear power stations as unsafe at present but that they will, or could, be made sufficiently safe in the future.
The corrected sentence must have a compound main verb view…but(verb); that is, the best answer above must begin with a verb that can be linked with view to complete the construction. Consequently, choices A, B, and C are incorrect. In choice E, would is faulty because it suggests without warrant that the stations would be made safe if some unnamed conditions were met. Choice D is best: that, although not essential, is preferable here; they is better than the needless repetition of power stations in choice E; and the verb tenses are correct. The question is more difficult than the average.