Is salt and sand a suspension?

Explanation:

The particles of salt become so small, they spread evenly throughout the water. This clear mixture of salt and water will not separate by itself. Sand in water is also a suspension. If you shake a container of sand and water, the sand spreads through the water, forming a cloudy liquid.

allowed for the prediction of the properties of missing elements.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.