A Soldier Stationed at a Base in the Northern Territory

Multiple Choice

A soldier stationed at a base in the Northern Territory is dressed in his sand-coloured camouflage. He wants to know the exact distance that another person can distinguish him from the earth mound in which he is hiding. The soldier is concerned with the

A) just noticeable difference.
B) absolute threshold.
C) visual processing boundary.
D) limits of perceptual ability.