Why do scientists use models?

Models make some things easier to understand.
Measurements can be made only on models.
Models help scientists visualize things they can’t see.
Models are perfectly accurate representations of objects.

C. Models help scientists visualize things that they cannot see.

Explanation:

A model is used to help scientists visualize things that they cannot see. A model is used to represent an idea, an object or a process that describes a phenomena. It tends to be thought of a speculation instrument to help structure clarifications.

Models are valuable rearrangements to help understanding. The models are incredible assets however they are legitimate as long as they can clarify the entirety of the accessible information that is from the perceptions and estimations.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.