Option C is correct.
Error: wrinkle | Correction: wrinkles
"As many" requires a plural countable noun. "Wrinkle" must be changed to "wrinkles."
"As many" is used with plural countable nouns (e.g., "as many wrinkles"). Using the singular "wrinkle" after "many" is a grammatical error. Options A, B, and D change meaning or create new errors, so they are incorrect.