Wind is the agent of erosion that creates sand dunes. The wind blows grains of sand into a sheltered or otherwise secure location, allowing gradual accumulation.
The biases of the author are his beliefs, in both practical and religious belief. The way the author might explain happenings in life and the way he thinks might be affected by his belief that God controls everything. His belief will also affect what he thinks will compose a good society.
You said which of the following
what are the options?
