Which of the following factors increases the potential for lead poisoning in homes?

Chipped or peeling paint surfaces significantly increase the risk of lead poisoning in homes. This is particularly relevant in older houses where lead-based paint was commonly used before regulations reduced or eliminated its use. When paint deteriorates, it can create lead dust or lead chips that can be ingested or inhaled by children and pets, who are more vulnerable to the harmful effects of lead exposure. The presence of such deteriorating paint makes it a critical factor in assessing lead poisoning risks, as children often explore their environments by touching surfaces and putting objects in their mouths.

In contrast, homes with modern appliances or recent renovations using lead-free materials do not present the same level of risk, as these factors are not associated with lead exposure. Similarly, homes without gardens do not connect to lead hazards related to paint, making them less of a concern for lead poisoning factors.