no grammar mistakes. but they are not countries.

我会选择拉丁美洲、非洲和亚洲。is not suitable for this question. Asian、Africa and Latin America are not country's name.you must answer the name of country.For example,China(Asian)、Brazil(Lantin America)、Egypt(Africa)

拉丁美洲，亚洲，非洲不是国家哦！可以写巴西，埃及，中国等