I'd say that
C. a stone carving, is the correct answer because a reed basket, pieces of clothing and clay plots would be most likely made by women.
I don't think women have the strength to do stone carvings, it also seems like the mans job.
Hope this helps.
Explanation:

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Specialization is where the production of a limited number of products focuses on a nation or individual. It is often forgotten to produce other goods and depends on trade for the other goods.