Social Science Research and History Tells Us That

Social science research and history tells us that

A) science and technology will inevitably save us from environmental gloom and doom.
B) we can quickly change our current course if we are willing to leave behind ideas and practices that are unsustainable.
C) major social change can occur with a critical political mass of 5-10%.
D) only we can quickly change our current course if we are willing to leave behind ideas and practices that are unsustainable and major social change can occur with a critical political mass of 5-10%
E) none of these answers