The sentence that does not have an error in pronoun use is:
A) Caleb is six years older than I.
The other sentences contain pronoun errors: B) "Our aunt visited Kiana and me yesterday." (It should be "me" instead of "I.") C) "Who did Amelia share her lunch with today?" (A more formal version would be "With whom did Amelia share her lunch today?") D) "Did Damian or I score the highest grades in class?" (It should be "I" instead of "me.")