Answer:
Leave those papers here.
Step-by-step explanation:
Standard English implies the form of English language that is widely accepted and followed especially regarding formal use like print and public matters. It is also categorized as the English language used by the educated strata of people as it employs uniform grammar, spelling, pronunciation, and vocabulary which is devoid of regional differences.
Therefore, among the given options the correct one is "Leave those papers here" as it appropriately employs the demonstrative pronoun 'those' while the other option contains a grammatical error that displays incorrect usage of the personal pronoun 'them' in objective form.