Environmental

In New Mexico, exposure to 'polycyclic aromatic hydrocarbons' (PAHs) from old asphalt, coal tar sealants, and contaminated soils is a concern because:

AThey are perfectly safe in small amounts
BPAHs are persistent environmental contaminants with carcinogenic properties, particularly relevant near old industrial sites✓ Correct
CThey only affect groundwater
DPAHs are regulated only in residential areas

Explanation

PAHs are a group of chemicals from burning of coal, oil, and other organic matter. They are persistent in soil and have carcinogenic properties.

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