Concept:Word formation is the process of creating new words by modifying existing ones or through innovation.
Explanation:Common word formation processes include compounding, conversion, affixation, blending, clipping, and borrowing.
Among these, compounding joins two words to form a new one (e.g., “sunflower”), and conversion changes a word’s grammatical class without altering its form (e.g., “email” as noun to verb).
The given options list only “compounding and conversion” as a valid pair of processes.
Other options like “meaning”, “spelling”, or “synonyms” are not word formation processes.
Thus, the correct choice is the combination of compounding and conversion.
Answer:A. compounding and conversion