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>
Three ways a scientist can reduce bias include: 1) Sampling a larger pool (assuming the subjects are human) in order to broaden recorded data. 2) Making sure to sample more than one group. This means to not just sample one's friends, etc.
