Which word does NOT belong with the others?

The yarn, twine, and cord are all used for tying. The tape is not used in the same way.

Heading, body, and closing are all parts of a letter; the letter is the whole, not a part.

Freeway, interstate, and expressway are all high- speed highways; a street is for low-speed traffic.

A branch, leaf, and root are all parts of a tree. The dirt underneath is not a part of the tree.

Dodge, duck, and avoid are all synonyms meaning evade. Flee means to run away from.

The couch, table, and chair are pieces of furniture; the rug is not.

The cornea, retina, and pupil are all parts of the eye.

The noun, preposition, and adverb are classes of words that make up a sentence. Punctuation belongs in a sentence, but punctuation is not a class of word.

An index, glossary, and chapter are all parts of a book. Choice a does not belong because the book is the whole, not a part.

The first three choices are all synonyms.