Question

which statement is true about plastics?
they have a wide variety of properties.
they are always soft and flexible.
they have only harmful effects on society.
they are natural materials.

Explanation:

Plastics can have different chemical compositions and structures, resulting in a wide range of properties such as hardness, flexibility, heat - resistance etc. They are not always soft and flexible (some are rigid), not only have harmful effects (they have many useful applications), and are synthetic materials, not natural.

Answer:

They have a wide variety of properties.