Have you seen them today?
B,D
Correct answer
Explanation
'You' and 'them' are personal pronouns in this sentence. 'You' is the subject pronoun addressing someone being spoken to, while 'them' is the object pronoun referring to certain people or things. 'Have' is a helping verb (auxiliary) and 'seen' is the main verb. The sentence has no actual nouns, only pronouns replacing them.