In the word unsustainable, the un-, sustain, and -able are all examples of(1 point)

Question

Responses

morphemes.
morphemes.

base words.
base words.

roots
roots

affixes.
affixes.

Answer 1

In the word "unsustainable," the un-, sustain, and -able are all examples of morphemes. Specifically, "sustain" is the root (or base word), "un-" is a prefix (an affix), and "-able" is a suffix (also an affix). However, since the question asks for what all three parts are collectively, "morphemes" is the correct answer.