Answer:
The Caribbean:
Antigua and Barbuda
Dominica
Grenada
Saint Kitts and Nevis
Saint Lucia
Saint Vincent and the Grenadines
Aruba
Bahamas
Barbados
Belize
Cayman Islands (U.K.)
Curaçao (Netherlands)
Dominican Republic
Guyana
Haiti
Jamaica
Sint Maarten
Suriname
Trinidad and Tobago
Turks and Caicos
D: ¿Te gusta vender los collares?
Gustar conjugated is still one word so it cannot be "gust a"
A verb ("vender") is singular so you cannot use "gustan"
A verb after gustar has to be infinitive
so the correct answer is ¿Te gusta vender los collares?