Which criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension?

 I took a long look at the chart provided and chose C whether it can be separated into simpler substances through physical separation techniques  and this answer is wrong

Explanation:  I just took the test on Plato and C whether it can be separated into simpler substances through physical separation techniques  and this answer is wrong

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

i think that the answer is c