answer is B. rapidamente. the sentence is saying "susan has very strong legs. she runs...." and rapidamente means fast.
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