Question

fleck means :
gown worn by the clergy
a decorative pin worn by women
a small contrasting part of something
a device for showing the operating condition of some system

Explanation:

The word "fleck" refers to a small contrasting part of something, like a speck or a small patch. For example, a fleck of color on a white surface. The other options do not match the standard definition of "fleck".

Answer:

C. a small contrasting part of something