What are soft materials used for?

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I did not understand well ?

Soft materials are important in a wide range of technological applications. They may appear as structural and packaging materials, foams and adhesives, detergents and cosmetics, paints, food additives, lubricants and fuel additives, rubber in tires, etc.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .