Final answer:
The correct negative tú command with double object pronouns is 'No te la pídas.'
Step-by-step explanation:
The sentence 'No le pidas la talla grande al empleado' translates to 'Don't ask the employee for the large size.' To form a negative tú command with double object pronouns, we need to place the pronouns before the verb and attach them with an accent to maintain the original stress of the sentence. The correct option is Option C. No te la pídas. This translates to 'Don't ask for it from him/her.' Here, 'te' represents 'to you' and 'la' represents 'it' from the sentence.
Learn more about Spanish commands with double object pronouns