Final answer:
Portable parts in English refer to the smaller units called morphemes that build words.
Step-by-step explanation:
Portable parts are not specifically associated with any particular subject or grade level. However, in the context of your question, portable parts can refer to 'pieces that build words' in English language studies. In linguistics, words are made up of smaller units called morphemes. These morphemes are the portable parts which can be combined to form different words. For example, the word 'unhappiness' comprises three portable parts: the prefix 'un-', which means 'not', the root 'happy', and the suffix '-ness', which turns an adjective into a noun. By understanding these portable parts, we can analyze and understand the structure and meaning of words in English.
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