Answer:
d) to tell a reader about an important historical event
Small pox was a huge problem during the pre revolutionary war erra but was not successfully araticated until the late 70s, it was wiped out because people where vacinated at a very young age. so the answer is B The smallpox vaccine was given for a long time and the disease no longer exists.
The answer is D bc she’s not being able to picture the writing and put it on paper how she wants
The type of sentence given is a compound sentence. It is a compound sentence because it consists of two independent sentences: "I already said yes to someone else" and "I can't go to the dance with you". In order to link the two sentences, the conjunction "because" is used.