The soil samples are stored in plastic film containers, Thus, option "B" is correct.
Soil is the thin layer of material surrounding the earth's texture and is constructed from the weathering of gravel.
It is created up, especially of mineral particles, organic materials, air, water and living organisms—all of which interact slowly yet constantly.
Thus, option "B" is correct.
To learn more about soil click here:
https://brainly.com/question/224605
#SPJ2