Some believe that deception is a necessary tool for psychological research because deception

a. could be safely replaced by roleplaying in most cases
b. is necessary to get accurate results in some experiments
c. harms many of the subjects of an experiment
d. is hurtful to the reputation of psychology in general

The correct answer is B.

Deception is used sometimes in psychological research in order to get accurate results from certain types of experiments and is allowed within reason. If the researcher can legitimately prove that deception is necessary then ethically it is ok. Certain types of experiments would need the participants to be unaware of what is being observed.

all soils contain mineral particles, organic matter, water and air the combinations determine the soil's properties – its texture, structure, porosity, chemistry and color. soil is made up of different-sized particles. sand particles tend to be the biggest.