One of the advantages of steel as a structural material is:

High strength in tension is one of the primary advantages of steel as a structural material. Steel has a very high tensile strength, meaning it can withstand significant forces stretching or pulling it apart without breaking. This characteristic makes it ideal for applications in which tension loads are prevalent, such as in beams, cables, and frames of buildings, bridges, and other structures. The ability to carry more weight relative to its volume allows for lighter structural elements, which can lead to more economical designs and the use of less material overall. Additionally, steel's tensile resilience contributes to the overall structural integrity and durability of buildings and infrastructures.

The other options do not capture this specific advantage of steel as effectively. While low cost can vary based on market conditions and not always favor steel, minimal maintenance is often associated with other materials as well. Furthermore, natural fire resistance is not a strong suit of steel; it must be specially treated or protected to enhance its performance in fire situations. Thus, the unique high tensile strength of steel distinguishes it as a vital material in construction and engineering.