Answer:
B. I would definitely think they would
Explanation:
Comic books are worthwile to read by everyone because they are another art form. Whether a book has photos, small print, boxes, whatever, they all have a meaning. The stereotype that comics book are just for kids or are only superhero related is outdated and leaves the wonderful world seeming closed off to so many.
Vibrant means bright or colorful so a good hint is the word glorious, which is set to be similar to vibrant (so you can guess that they have similar meanings).
If those are the only options, then the coordinating conjunction must be but. Coordinating conjunctions are words that connect two clauses, phrases, or words by treating them equally - one is not dependent upon the other. If those two are clauses, they must be independent clauses that together form a compound sentence. Besides "but", coordinating conjunctions are "and" and "or".
The first option is the answer