When clouds are viewed near the horizon, the individual cloud elements usually:

Appear closer together than is actually the case
Appear farther apart than is actually the case
Appear lighter in color than is actually the case
Appear to have more vertical development than is actually the case

The correct answer is: A. Appear closer together than is actually the case.

When clouds are viewed near the horizon, the individual cloud elements usually appear closer together than is actually the case. This is because of an optical illusion called atmospheric perspective. Atmospheric perspective is caused by the way that light travels through the atmosphere. As light travels through the atmosphere, it is scattered in all directions by the air molecules and dust particles. This scattering of light causes objects that are far away to appear hazy and less distinct. The further away an object is, the more hazy and less distinct it will appear.

When clouds are viewed near the horizon, they are very far away. The light from the clouds has to travel through a lot of atmosphere to reach our eyes. This scattering of light causes the clouds to appear hazy and less distinct. The haziness of the clouds makes it difficult to see the individual cloud elements. As a result, the cloud elements appear to be closer together than they actually are.

The other options are incorrect. Option B is incorrect because the individual cloud elements actually appear to be farther apart than they actually are. Option C is incorrect because the individual cloud elements actually appear to be darker in color than they actually are. Option D is incorrect because the individual cloud elements actually appear to have less vertical development than they actually do.

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