Briefly explain why ONE of the following options most clearly marks the beginning of the sectional crisis that led to the outbreak of the Civil War.

The answer should be b.

See diagram.we use washers to get the area and we will be integrating with respect to xouter radius is the  distance between y = e^x and y = -1    inner radius of washer is the distance between y = 1 and y = -1    the area of one cross-section of a washer is    solid lies between x = 0 and x = 2. the volume is    if you need this expanded, then    the question doesn't say to evaluate, so we're done.   

Ok i’m not good at this but imma try : )

Non of them obstinate means to stubbornly refuse