Why does marty decide to name the dog shiloh?   a. his sisters start calling the dog shiloh, and marty thinks it is a good name.   b. he gets the idea when his mother asks if the shiloh dog is still hanging around.   c. he heard the name on television and thought it was a good one.   d. he names the beagle for its owner, who lives near the river.

Best answer is B) He gets the idea when his mother asks if the Shiloh dog is still hanging around

Marty names the dog Shiloh after his mom refers to him as the "Shiloh dog", a reference to the area where Marty encountered the dog. He dug the name, and it stuck. 

Reverend Hale contributes to the emotional fever of the end of the act by completely believing the girl's confessions. Reverend Hale was called in order to investigate the claims of witchcraft. However, he was so dominated by his belief in witchcraft that he failed to realize that the claims were false. Instead, he adds to the hysteria by praising God and deciding to believe the girls, which precipitates the tragedies that came afterwards.