Based on my research here are the choices that I found: <span>A. It is a heterogenous mixture and particles settle down if left undisturbed.
B. It is a heterogenous mixture and particles do not settle down.
C. It is a homogenous mixture and particles settle down if left undisturbed.
Then the answer is </span>B. <span>It is a heterogenous mixture and particles do not settle down. </span>