Dysentery is an infection of the intestines resulting in severe diarrhea with the presence of blood and mucus in the feces. Just being straightforward.
I think it's c or d, because it basically tells that the statement might be true or it could be false. Also, it talks about how Barack Obama is collaborating with students all around the world.
There is no subject in this sentence.....Every summer, welcomes many travelers to its park and beaches.
