B
Which of these sentences from paragraph 1 states an opinion?
A "Carbon monoxide-you've heard the name, and you know it's
deadly."
"Like all poisons, there's a specific biological reason why this gas kills."
C "Carbon monoxide (CO to chemists) bonds to the hemoglobin
molecules in blood."
D "When this happens, the hemoglobin can't carry oxygen to body
tissues."
