Most People Find It Morally Permissible to Sacrifice One Life

Multiple Choice

Most people find it morally permissible to sacrifice one life to save five lives if the action involves pulling a switch.However,most people find it morally impermissible to sacrifice one life for five lives if the action involves pushing a man from a bridge.Why?

A) An electromechanical device like a switch makes it more likely that the action will be effective.
B) Pushing a man off a bridge evokes more negative emotional responses.
C) People are more likely to be injured if they attempt to push a man off the bridge.
D) People have doubts as to whether or not pushing a man from a bridge really will save five lives.