What material is indicated by "corrugated tin"?

The term "corrugated tin" refers to a type of roofing material that is commonly used in construction. This material is characterized by its wavy, corrugated shape, which not only provides structural strength but also allows for efficient runoff of rainwater. The corrugation increases the rigidity of the metal while minimizing the amount of material needed, making it a lightweight and cost-effective option for roofs.

In the context of the other choices, irrigation pipes are typically made from materials like PVC or polyethylene, which have specific properties suited to carrying water efficiently. Fertilizers are composed of various chemical compounds and are not related to metal materials. Tools for breaking soil, such as trowels or hoes, are usually made from metal or sturdy plastic but do not fit the description of "corrugated tin." Therefore, the identification of "corrugated tin" as roofing material is correct due to its established application in building structures.