Which word best matches the meaning of "corrode"?

Explanation

"Corrode" refers to the gradual destruction or degradation of a material, often metal, due to chemical reactions like rusting. "Deteriorate" is a suitable synonym as it also means to worsen or break down over time. The other choices do not share this meaning: "Reinforce" and "Fortify" imply making something stronger, which is the opposite of corroding; "Buff" means to polish or make shiny; and "Construct" means to build or assemble, which is unrelated to corrosion.