Read the excerpt from Silent Spring.
In the gutters under the eaves and between the shingles of
the roofs, a white granular powder still showed a few
patches; some weeks before it had fallen like snow upon
the roofs and the lawns, the fields and streams.
Which best explains how the phrase "white granular
powder" supports the author's purpose of calling attention
to the environment?
The powder is an unnatural substance.
The powder has a texture like sugar.
The powder looks like freshly fallen snow.
The powder is used in house construction.