Answer: B Symbols have a concrete, physical existence. and C Symbols carry alternate, associated meanings.
Explanation:
Symbols refer to objects, traits, colors, animals, etc (anything with a physical existence) that represent one meaning or several (often ideals, thoughts, emotions, etc.) that are entirely different from the actual meaning of the form of that physical "thing" or living being.
For example, for many a white dove (something with physical existence) represents peace, and for others, it may represent purity because of its color.