Question

your latest shipment of chicken has some items with usda stickers and some items with usda grade stamps. what is the difference in these items? stickers mean the chicken is free from harmful microorganisms. stamps mean the providers quality is substandard. stickers mean the providers facilities are under investigation. stamps mean the chickens quality has been rated

Explanation:

USDA stickers are related to inspection for wholesomeness (not specifically about being free from harmful microorganisms as stated in the first option). USDA GRADE stamps are used to rate the quality of the chicken. The correct understanding is that stamps mean the chicken's quality has been rated.

Answer:

Stamps mean the chicken's quality has been rated