Which plastic is typically avoided due to safety concerns?

The correct response is based on the properties and safety concerns associated with different types of plastics. High Impact Polystyrene (HIPS) is often avoided in certain applications due to concerns related to its environmental impact and potential health risks. HIPS can emit styrene, a substance that is classified as a possible human carcinogen. In environments where material interactions could lead to leaching or emissions, using HIPS may pose health and safety risks, making it a less desirable option for products that require stringent safety standards.

On the other hand, plastics like polypropylene (PP), high-density polyethylene (HDPE), and low-density polyethylene (LDPE) are generally considered safer and are widely used in various products, including food containers and consumer goods, due to their lower toxicity levels and better recycling profiles. Therefore, HIPS is highlighted as a more hazardous choice, making it typically avoided in applications where safety is paramount.