Final answer:
Maya's elevation while diving 15 feet below sea level is represented by the integer -15 feet, so the correct answer is A) -15 feet.
Step-by-step explanation:
The elevation of Maya who is diving 15 feet below sea level is represented by a negative integer because she is below the reference level, which is sea level. The correct way to denote her position with an integer is as a negative number, which represents a depth below sea level. Therefore, Maya's elevation is represented as -15 feet, so the correct answer to the question is A) -15 feet.