Which type of crate requires the creation of holes for ventilation purposes?

The option related to lumber-sheathed crates is correct because these types of crates are typically made from solid wood and often have limited airflow due to their construction. To ensure adequate ventilation, which is crucial for preserving certain sensitive materials or goods during transport, holes must be created in the sides of the crate. Ventilation helps prevent moisture buildup inside the crate and allows air circulation, which can be vital for preventing spoilage or damage to the contents.

In contrast, plywood-sheathed, plastic-sheathed, and metal-framed crates usually have better inherent structural features, such as gaps or designs that allow for some degree of airflow without the need for manually creating additional ventilation holes. For example, plywood may have more flexibility in design, and plastic or metal materials often accommodate ventilation through existing features, making additional holes unnecessary.