The best translation of "Do you need a pen?" in Spanish is "¿Necesitas una pluma?" This choice uses the appropriate indefinite article and is the most general form of the question. Other options either misuse the articles or imply specificity that doesn't match the original intent. ;
The best translation for "Do you need a pen?" is "¿Necesitas una pluma?" This option correctly employs the indefinite article "una" with the feminine noun "pluma." Other choices either misuse articles or imply specificity that is not intended in the original question.
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