Greek roots can be added to suffix and prefixes and help to understand the meaning of the new word. The morph is the Greek root meaning "having a form".
Greek root have contributed in English language in many ways. It can be included as adjective, adverb, noun, verb, etc.
Some examples of this can include:
The Greek root word i.e., morph means having a from.
Thus the correct option is 3.
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