What is added to the beginning of a word to alter it's meaning

Why witchcraft often the explanation for illness

How does the author foreshadow trouble in the prison? support your answer with explicit textual evidence

Which sentence is correctly punctuated? a. i haven’t found a new job, and i don’t plan to look for one until i have to. b. my work is piling up—day to day—and i can’t seem to get caught up. c. i know things could be worse (they have been in the past).