Based on current climate trends, which type of event caused by physical environmental processes do scientists think is the most likely threat to Australia in the future?

A.
overfishing

B.
flooding

C.
coral bleaching

D.
drought

Alright I am very confused. I went over this multiple times. Help pls? Thank you! You don't have to answer.

2 answers

The answer could be any of these, although I’d put C last if I had to put them in order.
https://www.google.com/search?source=hp&ei=Q2jUXa6VHIvQsAWwqpSADA&q=environmental+threat+to+Australia&oq=environmental+threat+to+Australia&gs_l=psy-ab.3..0i22i30.9589.26929..27851...0.0..0.139.3329.20j13......0....1..gws-wiz.......0i131j0j0i333j33i22i29i30.ngqXIKAOjmw&ved=0ahUKEwjuwr2fpfflAhULKKwKHTAVBcAQ4dUDCAg&uact=5