● Coral reefs are found in tropical and subtropical regions. Most of them are located between Tropics of Capricorn and Cancer, so yes #1 is indeed right. ● According to UNEP, % of world area covered by each region: Indonesia 18%, Australia: 17% and Philippines: 9% so collectively that'll be more than 33%. Hence #2 is right. ● Coral reefsinclude a wide range of diversity with 32 of the 34 animal phyla present, in contrast to only 9 phyla represented in tropical rainforest. So,#3 is also right. Thus, answer is D:1,2 and 3