The elements of a heterogeneous mixture can be distinguished visually. what does this mean?
a. that two separate elements have been mixed together.
b. that the components of the mixture cannot be separated.
c. that you can see the different component parts of the mixture.
d. that heterogeneous mixtures combine solids and liquids.

c.  That you can see the different component parts of the mixture.

Explanation:

C. That you can see the different component parts of the mixture.

Explanation: Heterogeneous mixtures does not have a uniform apperance so the individual components of the mixture seen visually and can be separated by physical means.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds