:c : c : cthe mixture you separated was a mixture of iron filings, sand, and salt. based on your understanding of matter, is this mixture a homogenous mixture or heterogenous mixture? how do you know?   a.)homogenous mixture-the parts are uniformly mixed b.)homogenous mixture-the parts are not uniformly mixed c.)heterogenous mixture-the parts are uniformly mixed d.)heterogenous mixture-the parts are not uniformly mixed