The correct option is B. Alloy steel chains are usually opted for because they are strong, durable, resistant to abrasion and they have the ability to conform to the shape of the loads that they are carrying. In addition to all these properties, they also have the capacity to carry hot materials. These chains are typically made from various grades of alloys, therefore, manufacturers normally marked them in accordance with American Society for Testing and Maintenance guidelines. The chains are usually marked to show the following: size, grade, length and load capacity. The chain are often also marked with serial numbers and the manufacturers' names and brands. Thus, all the facts mentioned about alloy steel chains in the options given above are correct. <span />
It seems that you have missed the necessary options for us to answer this question so I had to look for it. But anyway, here is the answer. If Dr. John Sutherland is correct, the one that was necessary <span> for inert carbon atoms to become part of the chemistry of earth is CYANIDE. Hope this helps.</span>
