Q: What is the primary component of steel alloys?


Read this paragraph and choose the correct option from the provided answers:

Steels are a very important class of alloys. The many types of steels are primarily composed of iron, with various amounts of the elements carbon, chromium, manganese, nickel, molybdenum, and boron. Steels are widely used in building construction because of their strength, hardness, and resistance to corrosion. Most large modern structures like skyscrapers and stadiums are supported by a steel skeleton (see Figure below ).

 Choices:

- carbon

- titanium

- alluminum

- iron


A:
iron