a and b are both correct. c is technically incorrect, because the fist comma should be a semicolon, in short it should be b as that is the only difference. However, many native speakers might get this wrong, and in many contexts it will not matter.
The repeated verb "symbolizes" is very properly omitted in this parallel construction.
"Snowflakes" is a plural noun that possesses "wake flow", so the apostrophe is required.
Without the apostrophe, you have two nouns in a row that do not form a compound noun because the first is plural.
A cleaner alternative is, "THE MODAL ANALYSIS OF SNOWFLAKE WAKE FLOW" (no "s" on "snowflake"). This allows &...