The correct answer is all navigation near coral reefs, including anchorages and vessel routing that keep their safe distance and frequency at a minimum and respect all laws of utilization of marine resources and safe transit are not a threat to coral reefs. The threats would be excessive and unsafe navigation, abusive utilization of marine resources, pollution and hazardous material spills.
The correct answer is D, because that is the only appropriate shift in tense. A isn't correct because present perfect tense (have raced) is used inappropriately, when it should have been past perfect. B is also incorrect because past perfect means that that action happened before the storm blew, which is not the case. C features future continuous tense, which is impossible due to shift in tense. Therefore, the answer is D, because there is an appropriate tense in that sentence, past simple.
Priestly makes burling seem foolish and Aragorn in-front of the Victorian readers by using dramatic irony as mr birling talks about the titanic ship being ‘unsinkable absolutely unsinkable’’ and that clearly isn’t true as we know what happens to the ship.This is short Sorry there’s loads of stuff online tho