Which number of years is closest to the time it takes sor soil to form from bedrock?

Answer 1

Hi. Many millions.

Answer 2

Well, you didn't mention the choices you were given, but
"Soil formation processes never stop which require that soil is always changing. The long periods over which change occurs and the multiple influences of change mean that simple soils are rare. While soil can achieve relative stability in properties for extended periods of time, the soil life cycle ultimately ends in soil conditions that leave it vulnerable to erosion. Little of the soil continuum of the earth is older than Tertiary and most no older than Pleistocene." [1]
"The Pleistocene has been dated from 1.806 million (±5,000 years) to 11,550 years before present." [2]

There are so many different factors that contribute to the formation of soil from bedrock: type of rock; amount of chemical and/or mechanical weathering; temperature; water ...

I wonder if you could be a little more specific?