An introductory clause is usually followed by a ; an adverb clause within a sentence usually does not require punctuation. adverb, comma noun, comma adverb, no comma noun, no comma

adverb, comma

Explanation:

Example: Whenever we go to the park, it's for walking my dog.

the correct answer is:   [c]:

                    →     " leave it out. "  

hope this is to you!

        best wishes!

i don't really know the circumstances. i personally think not due to it not being fair for all parties and how hated i'd become if i thought it was a good thing.