The correct answer to the student's question is paint, which is a known source of lead exposure on job sites. Lead-based paints were widely used in the past, particularly in older buildings. Workers involved in renovation or demolition of such buildings may encounter lead-related health risks. ;
The correct answer is paint, which is a notable source of lead exposure on job sites, particularly in older buildings where lead-based paints were used. Lead can be released during renovation or demolition activities. Other options listed are not primary sources of lead exposure on job sites.
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