Based on the sequence of events in the excerpt, which sentence best states a cause-and-effect relationship? because antonio meucci was a trained engineer, he was able to invent a talking telegraph. because electricity was used to cure sickness, antonio meucci invented the talking telegraph. because the device was so useful, antonio meucci invented the talking telegraph. because he heard a patient’s yelp through a copper wire, antonio meucci invented the talking telegraph.