While “embellish” means to decorate or improve something by adding details or features, “disfigure” means to spoil or ruin the appearance of something, making it less attractive.

Blood is thicker than water is a proverb in English meaning that familial bonds will always be stronger than other relationships.

The phrase “Dear friend” is a vocative, which is a word or phrase that is used to address someone directly. In English, vocatives are typically followed by a comma. So the answer is (b), “,”.