Commas must be placed between coordinate adjectives. When using multiple adjectives to describe a noun, we use commas to separate coordinate adjectives. Coordinate adjectives are adjectives that equally modify the noun, and they can be rearranged without changing the meaning of the sentence. For example, in the phrase "the tall, beautiful tree," both "tall" and "beautiful" are coordinate adjectives. To properly punctuate this phrase, we would use a comma to separate the adjectives: "the tall, beautiful tree." This helps to clarify that both adjectives are modifying the noun "tree" independently. Semicolons and periods are not used between coordinate adjectives, and using no punctuation may result in confusion or ambiguity. Therefore, the correct answer is commas.
