Extreme _____ may cause PVC conduit to become brittle and, therefore, more susceptible to damage from physical contact.
b) corrosive conditions
See answer and applicable Code reference
The correct answer is: d) cold
Article 352 covers the use, installation, and construction specifications for rigid polyvinyl chloride conduit and associated fittings. As noted in an Information Note in Sec. 352.10, "Extreme cold may cause some nonmetallic conduits to become brittle and, therefore, more susceptible to damage from physical contact."