The correct answer is C. Vulnerable.
The word “vulnerable” means “open to attack or damage.” It comes from the Latin word “vulnerabilis,” which means “able to be wounded.”
The other options are incorrect because they are not spelled correctly. The word “velnerable” is missing an “n” in the middle. The word “vulnarable” is missing an “o” at the end. The word “valnerable” is missing an “u” at the beginning and an “o” at the end.
It is important to spell words correctly so that your writing is clear and easy to understand. When you spell words incorrectly, it can make your writing look unprofessional and can make it difficult for people to understand what you are trying to say.