About one hundred thousand years ago, very fluid lava started erupting slowly and gently from a place near a plate boundary. what best describes the slope of the mountain that resulted from such a phenomenon? a) steep slope with high mountain, as these are formed by a composite volcano b) gentle slope with mild hill, as these are formed by a composite volcano c) gentle slope with mild hill, as these are formed by a shield volcano d) steep slope with high mountain, as these are formed by a shield volcano