7 At the United Nations Climate Change Conference,the UN Secretary General pointed out that,______,the climate situation

7 At the United Nations Climate Change Conference,the UN Secretary General pointed out that,______,the climate situation would get worse and worse.
A.if not dealing with properly\x05\x05\x05 B.unless dealing with properly
C.if properly dealt with\x05\x05\x05\x05 D.unless properly dealt with