Write an explanation on how filtration works, using the words: soluble and unsoluble.

Filtration is the action or process of filtering something. Filtration is the method used for separating an insoluble solid from a liquid. Ex - oil and water

I am really sorry but I don't know how to include the word solube!!!

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

i believe the answer is a.