Answer: D, the comma after "loyal" should be removed
Explanation: Soccer is considered a common noun. It's a very broad noun and can be used for any soccer team. Common nouns shouldn't be capitalized, making A incorrect. The word "however" is used to introduce the sentence. It can be removed and the sentence would make perfect sense. Words like this NEED a comma, making B incorrect as well. Cat is also a common noun, so C is incorrect. You usually only put a comma between 2 adjectives when the adjectives are VERY similar. Loyal and black are not similar at all. Black cat is also what some people consider their breed of cat. The adjectives cannot be switched around, so D is correct