The small boy was able to give a graphic description of the thief.

Answer: Option C

Vague : of uncertain, indefinite, or unclear character or meaning.
Broad : having a distance larger than usual from side to side; wide.
Vivid : producing powerful feelings or strong, clear images in the mind.
Drawing : a picture or diagram made with a pencil, pen, or crayon rather than paint.
Graphic : giving clear and vividly explicit details.

Synonym of Graphic is Vivid