Final answer:
Whether a professional skateboarder will get hurt on a 15-feet high ramp cannot be determined without additional information, as it depends on various safety and skill factors. The correct answer is d) Need more information.
Step-by-step explanation:
The question about whether a professional skateboarder will get hurt using a ramp with a height of 15 feet or greater cannot be answered definitively without additional information.
The potential for injury depends on various factors such as the skateboarder's skill level, the ramp's design, the materials used, protective gear being worn, and the manner in which the skateboarder uses the ramp. Therefore, the correct answer is d) Need more information.