Which sentence does not contain any errors?
a. i added one-fourth of the chopped onions into the stew.
b. the dairy farm is one quarter mile down the road.
c. brianna's jump rope is three and two thirds inches longer than maddie's.
d. two thirds of pet owners said they have more than one animal.

Which statement contains an opinion? the ants serve to protect the acacia from other plants and herbivores. the acacia depends on pollinators for the exchange of genetic material. the acacia has no chemical defenses to discourage herbivores. the ants provide the acacia with the best protection from other plants and herbivores.