Question

stainless steel is a metal alloy that combines the most desirable properties of two metals: steel and chromium. though steel alone exhibits strength, it is subject to corrosion when exposed to moisture. steel containing at least 12 percent chromium retains its strength and flexibility but gains the attribute of being corrosion resistant. the presence of chromium in stainless steel forms a very thin layer of chromium oxide on its surface. this barrier staves off corrosion, sealing off the stainless steels internal structure. this feature makes stainless steel ideal for a vast number of applications in industries as diverse as aviation, food preparation, and medicine. do it! the combination is ________. a beneficial b expendable c grotesque d abrasive

Explanation:

The text states that stainless steel (the combination of steel and chromium) retains strength and flexibility and gains corrosion - resistance. This makes it ideal for many applications. "Beneficial" means resulting in good, which aligns with these positive properties. "Expendable" means able to be sacrificed, which is not the case. "Grotesque" means ugly or distorted, which is incorrect. "Abrasive" means rough or harsh, which also does not fit the context.

Answer:

A. beneficial