What is the main problem with the verbs in this passage? "Sialic acids are a highly diverse group of nine-carbon amino sugars. They are a component of glycoconjugates(mainly glycoproteins and glycolipids). Glycoconjugates is the general classification for carbohydrates covalently linked with other chemical species such as proteins, peptides, lipids and saccharides."

a. They are in the passive voice
b. They are buried verbs
c. They are boring "to be" verbs​

The author most likely included these details in order to read the excerpt from "justin lebo." it was a bmx bike with a twenty-inch trame. its original color was buried beneath five or six coats of gunky paint. now it showed up as sort of a rusted red. everything the grips, the pedals, the brakes, the seat, the spokes-were bent or broken, twisted and rusted, highlight the amount of money justin had to spend to restore the bicycle llustrate why justin wanted to give the bicycle away to someone else. emphasize how hard justin had to work to restore the bicycle. show why justin may have made a mistake in buying this bicycle