I would say that it's best to use D, compare and contrast. In a compare and contrast writing, two subjects are being compared and contrasted. Depending on how you organize your writing, you can talk about one subject first and then the other.
Overall, Therefore, Reflecting back On,
I would say that the parallel list here is C) a lost puppy, a colored poster, and a happy boy.
This is because all words have an article <em>a, </em>and an adjective in front of them, so they are parallel.
The correct answer is B. Prevent unfair or deceptive bussines practice.
Consumer protection laws are designed to secure the consumer's rights. They are also in charge of ensuring fair trade and well informed marketplaces. The laws prevent fraud and unfair practices.
Options C and D are incorrect because it is the consumer's decision if he/she wants to spend a lot of money or buy unnecessary items. Option A is also incorrect because the Consumers Protection Laws are designed to protect the consumer from the business and not the business from the consumer.