Which physical method can separate a mixture of steel ball bearings and marbles

Explanation:

A method with the help of which substances in a mixture can be separated from each other by physical means due to large difference in their sizes is known as sorting.

For example, mixture of steel ball bearings and marble will have different size of both marbles and steel ball bearings.

Hence, they are easily identifiable and thus, they can be easily separated from each other with the help of sorting.

Thus, we can conclude that sorting is the physical method that can separate a mixture of steel ball bearings and marbles.

b is the correct answer

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