What is a characteristic of a plywood casket?

A plywood casket is primarily characterized by its construction method, where layers of thin wood veneer are glued together to create a strong, lightweight material. This construction allows for the unique structural integrity and aesthetic appeal of plywood. The design typically does not involve the extensive use of solid wood but instead features multiple layers processed in a way that provides the necessary strength while being cost-effective.

The use of cardboard, as mentioned in the choice, generally refers to eco-friendly or biodegradable caskets, which are not classified as plywood. The other options incorrectly identify the materials used in a plywood casket, emphasizing metal or solid wood, or suggesting attributes related to long-term burial that are not definitive characteristics of plywood specifically.