Final answer:
Nnaemeka objects to the girl his father finds for him to marry due to concerns about her true identity, her economic prospects, and the potential for their relationship to end in her marrying a white man.
Step-by-step explanation:
Nnaemeka objects to the girl his father finds for him to marry for several reasons. First, he believes that the girl is only pretending to be someone she's not. He also believes that marrying her would not lead to a happy future, as no man of her race could provide her with the life she desires. Nnaemeka also objects to the idea of financial responsibility, as he does not want to support her indefinitely. Lastly, he suggests that she will eventually marry a white man, as that is the future he believes awaits her.