Final answer:
Composite wood/plastic decking is not structural and is primarily used for outdoor decking. Hence the correct answer is option 2
Step-by-step explanation:
Composite wood/plastic decking is not considered to be structural. It is primarily used for outdoor decking and does not have the load-bearing capacity required for structural applications. Composite decking is made by combining wood fibers, plastic, and a binding agent to create a durable and low-maintenance material.
Hence the correct answer is option 2